Finding the Fourth Proportional to 1,287,185.58, 1,776,356.12 and 714,279.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,185.58 : 1,776,356.12 = 714,279.06 : x
2. Step 2: Convert to fraction form
   1,287,185.58/1,776,356.12 = 714,279.06/x
3. Step 3: Cross multiply
   1,287,185.58x = 1,776,356.12 × 714,279.06
4. Step 4: Simplify right side
   1,287,185.58x = 1,268,813,981,404.55
5. Step 5: Solve for x
   x = 1,268,813,981,404.55/1,287,185.58
6. Step 6: Final answer
   x = 985,727.31