Finding the Fourth Proportional to 1,006,670.82, 1,389,265.54 and 576,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006,670.82 : 1,389,265.54 = 576,978.72 : x
2. Step 2: Convert to fraction form
   1,006,670.82/1,389,265.54 = 576,978.72/x
3. Step 3: Cross multiply
   1,006,670.82x = 1,389,265.54 × 576,978.72
4. Step 4: Simplify right side
   1,006,670.82x = 801,576,653,009.31
5. Step 5: Solve for x
   x = 801,576,653,009.31/1,006,670.82
6. Step 6: Final answer
   x = 796,264.91