Finding the Fourth Proportional to 1,525.50, 2,105.55 and 904.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.50 : 2,105.55 = 904.86 : x
2. Step 2: Convert to fraction form
   1,525.50/2,105.55 = 904.86/x
3. Step 3: Cross multiply
   1,525.50x = 2,105.55 × 904.86
4. Step 4: Simplify right side
   1,525.50x = 1,905,227.97
5. Step 5: Solve for x
   x = 1,905,227.97/1,525.50
6. Step 6: Final answer
   x = 1,248.92