Finding the Fourth Proportional to 1,016,900.31, 1,524,752.42 and 385,858.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,900.31 : 1,524,752.42 = 385,858.47 : x
2. Step 2: Convert to fraction form
   1,016,900.31/1,524,752.42 = 385,858.47/x
3. Step 3: Cross multiply
   1,016,900.31x = 1,524,752.42 × 385,858.47
4. Step 4: Simplify right side
   1,016,900.31x = 588,338,633,980.71
5. Step 5: Solve for x
   x = 588,338,633,980.71/1,016,900.31
6. Step 6: Final answer
   x = 578,560.78