Finding the Fourth Proportional to 1,111.29, 1,666.00 and 525.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.29 : 1,666.00 = 525.96 : x
2. Step 2: Convert to fraction form
   1,111.29/1,666.00 = 525.96/x
3. Step 3: Cross multiply
   1,111.29x = 1,666.00 × 525.96
4. Step 4: Simplify right side
   1,111.29x = 876,250.02
5. Step 5: Solve for x
   x = 876,250.02/1,111.29
6. Step 6: Final answer
   x = 788.50