Finding the Fourth Proportional to 1,209,061,123.26, 1,814,282,786.61 and 656,408,486.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,061,123.26 : 1,814,282,786.61 = 656,408,486.10 : x
2. Step 2: Convert to fraction form
   1,209,061,123.26/1,814,282,786.61 = 656,408,486.10/x
3. Step 3: Cross multiply
   1,209,061,123.26x = 1,814,282,786.61 × 656,408,486.10
4. Step 4: Simplify right side
   1,209,061,123.26x = 1,190,910,617,315,959,552
5. Step 5: Solve for x
   x = 1,190,910,617,315,959,552/1,209,061,123.26
6. Step 6: Final answer
   x = 984,987,933.53