Finding the Fourth Proportional to 1,925.43, 2,657.39 and 1,139.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,925.43 : 2,657.39 = 1,139.73 : x
2. Step 2: Convert to fraction form
   1,925.43/2,657.39 = 1,139.73/x
3. Step 3: Cross multiply
   1,925.43x = 2,657.39 × 1,139.73
4. Step 4: Simplify right side
   1,925.43x = 3,028,701.41
5. Step 5: Solve for x
   x = 3,028,701.41/1,925.43
6. Step 6: Final answer
   x = 1,573.00