Finding the Fourth Proportional to 2,120,097.12, 3,181,196.54 and 840,677.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,097.12 : 3,181,196.54 = 840,677.16 : x
2. Step 2: Convert to fraction form
   2,120,097.12/3,181,196.54 = 840,677.16/x
3. Step 3: Cross multiply
   2,120,097.12x = 3,181,196.54 × 840,677.16
4. Step 4: Simplify right side
   2,120,097.12x = 2,674,359,272,649.03
5. Step 5: Solve for x
   x = 2,674,359,272,649.03/2,120,097.12
6. Step 6: Final answer
   x = 1,261,432.44