Finding the Fourth Proportional to 1,499.61, 2,250.42 and 525.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.61 : 2,250.42 = 525.72 : x
2. Step 2: Convert to fraction form
   1,499.61/2,250.42 = 525.72/x
3. Step 3: Cross multiply
   1,499.61x = 2,250.42 × 525.72
4. Step 4: Simplify right side
   1,499.61x = 1,183,090.80
5. Step 5: Solve for x
   x = 1,183,090.80/1,499.61
6. Step 6: Final answer
   x = 788.93