Finding the Fourth Proportional to 1,864.14, 2,572.52 and 1,078.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.14 : 2,572.52 = 1,078.18 : x
2. Step 2: Convert to fraction form
   1,864.14/2,572.52 = 1,078.18/x
3. Step 3: Cross multiply
   1,864.14x = 2,572.52 × 1,078.18
4. Step 4: Simplify right side
   1,864.14x = 2,773,639.61
5. Step 5: Solve for x
   x = 2,773,639.61/1,864.14
6. Step 6: Final answer
   x = 1,487.89