Finding the Fourth Proportional to 1,562.17, 2,342.79 and 1,287.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.17 : 2,342.79 = 1,287.58 : x
2. Step 2: Convert to fraction form
   1,562.17/2,342.79 = 1,287.58/x
3. Step 3: Cross multiply
   1,562.17x = 2,342.79 × 1,287.58
4. Step 4: Simplify right side
   1,562.17x = 3,016,529.55
5. Step 5: Solve for x
   x = 3,016,529.55/1,562.17
6. Step 6: Final answer
   x = 1,930.99