Finding the Fourth Proportional to 1,007,815.94, 1,390,785.72 and 555,106.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,815.94 : 1,390,785.72 = 555,106.94 : x
2. Step 2: Convert to fraction form
   1,007,815.94/1,390,785.72 = 555,106.94/x
3. Step 3: Cross multiply
   1,007,815.94x = 1,390,785.72 × 555,106.94
4. Step 4: Simplify right side
   1,007,815.94x = 772,034,805,224.90
5. Step 5: Solve for x
   x = 772,034,805,224.90/1,007,815.94
6. Step 6: Final answer
   x = 766,047.42