Finding the Fourth Proportional to 1,603.71, 2,402.82 and 1,259.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.71 : 2,402.82 = 1,259.28 : x
2. Step 2: Convert to fraction form
   1,603.71/2,402.82 = 1,259.28/x
3. Step 3: Cross multiply
   1,603.71x = 2,402.82 × 1,259.28
4. Step 4: Simplify right side
   1,603.71x = 3,025,823.17
5. Step 5: Solve for x
   x = 3,025,823.17/1,603.71
6. Step 6: Final answer
   x = 1,886.76