Finding the Fourth Proportional to 2,581.57, 3,562.58 and 1,402.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.57 : 3,562.58 = 1,402.64 : x
2. Step 2: Convert to fraction form
   2,581.57/3,562.58 = 1,402.64/x
3. Step 3: Cross multiply
   2,581.57x = 3,562.58 × 1,402.64
4. Step 4: Simplify right side
   2,581.57x = 4,997,019.10
5. Step 5: Solve for x
   x = 4,997,019.10/2,581.57
6. Step 6: Final answer
   x = 1,935.65