Finding the Fourth Proportional to 1,036,111.50, 1,554,254.73 and 288,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036,111.50 : 1,554,254.73 = 288,157.50 : x
2. Step 2: Convert to fraction form
   1,036,111.50/1,554,254.73 = 288,157.50/x
3. Step 3: Cross multiply
   1,036,111.50x = 1,554,254.73 × 288,157.50
4. Step 4: Simplify right side
   1,036,111.50x = 447,870,157,359.98
5. Step 5: Solve for x
   x = 447,870,157,359.98/1,036,111.50
6. Step 6: Final answer
   x = 432,260.58