Finding the Fourth Proportional to 1,385.54, 1,901.29 and 1,260.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.54 : 1,901.29 = 1,260.25 : x
2. Step 2: Convert to fraction form
   1,385.54/1,901.29 = 1,260.25/x
3. Step 3: Cross multiply
   1,385.54x = 1,901.29 × 1,260.25
4. Step 4: Simplify right side
   1,385.54x = 2,396,092.82
5. Step 5: Solve for x
   x = 2,396,092.82/1,385.54
6. Step 6: Final answer
   x = 1,729.35