Finding the Fourth Proportional to 1,520.76, 2,275.86 and 935.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.76 : 2,275.86 = 935.50 : x
2. Step 2: Convert to fraction form
   1,520.76/2,275.86 = 935.50/x
3. Step 3: Cross multiply
   1,520.76x = 2,275.86 × 935.50
4. Step 4: Simplify right side
   1,520.76x = 2,129,067.03
5. Step 5: Solve for x
   x = 2,129,067.03/1,520.76
6. Step 6: Final answer
   x = 1,400.00