Finding the Fourth Proportional to 1,045.89, 1,565.61 and 576.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.89 : 1,565.61 = 576.18 : x
2. Step 2: Convert to fraction form
   1,045.89/1,565.61 = 576.18/x
3. Step 3: Cross multiply
   1,045.89x = 1,565.61 × 576.18
4. Step 4: Simplify right side
   1,045.89x = 902,073.17
5. Step 5: Solve for x
   x = 902,073.17/1,045.89
6. Step 6: Final answer
   x = 862.49