Finding the Fourth Proportional to 2,117,336.10, 3,174,218.82 and 918,355.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,336.10 : 3,174,218.82 = 918,355.68 : x
2. Step 2: Convert to fraction form
   2,117,336.10/3,174,218.82 = 918,355.68/x
3. Step 3: Cross multiply
   2,117,336.10x = 3,174,218.82 × 918,355.68
4. Step 4: Simplify right side
   2,117,336.10x = 2,915,061,882,909.90
5. Step 5: Solve for x
   x = 2,915,061,882,909.90/2,117,336.10
6. Step 6: Final answer
   x = 1,376,759.17