Finding the Fourth Proportional to 2,581.40, 3,562.28 and 1,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.40 : 3,562.28 = 1,402.50 : x
2. Step 2: Convert to fraction form
   2,581.40/3,562.28 = 1,402.50/x
3. Step 3: Cross multiply
   2,581.40x = 3,562.28 × 1,402.50
4. Step 4: Simplify right side
   2,581.40x = 4,996,097.70
5. Step 5: Solve for x
   x = 4,996,097.70/2,581.40
6. Step 6: Final answer
   x = 1,935.42