Finding the Fourth Proportional to 1,279,892.49, 1,914,191.82 and 1,138,728.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,892.49 : 1,914,191.82 = 1,138,728.53 : x
2. Step 2: Convert to fraction form
   1,279,892.49/1,914,191.82 = 1,138,728.53/x
3. Step 3: Cross multiply
   1,279,892.49x = 1,914,191.82 × 1,138,728.53
4. Step 4: Simplify right side
   1,279,892.49x = 2,179,744,827,755.67
5. Step 5: Solve for x
   x = 2,179,744,827,755.67/1,279,892.49
6. Step 6: Final answer
   x = 1,703,068.69