Finding the Fourth Proportional to 1,258.72, 1,737.32 and 761.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.72 : 1,737.32 = 761.38 : x
2. Step 2: Convert to fraction form
   1,258.72/1,737.32 = 761.38/x
3. Step 3: Cross multiply
   1,258.72x = 1,737.32 × 761.38
4. Step 4: Simplify right side
   1,258.72x = 1,322,760.70
5. Step 5: Solve for x
   x = 1,322,760.70/1,258.72
6. Step 6: Final answer
   x = 1,050.88