Finding the Fourth Proportional to 1,358.73, 1,875.20 and 1,275.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.73 : 1,875.20 = 1,275.30 : x
2. Step 2: Convert to fraction form
   1,358.73/1,875.20 = 1,275.30/x
3. Step 3: Cross multiply
   1,358.73x = 1,875.20 × 1,275.30
4. Step 4: Simplify right side
   1,358.73x = 2,391,436.18
5. Step 5: Solve for x
   x = 2,391,436.18/1,358.73
6. Step 6: Final answer
   x = 1,760.05