Finding the Fourth Proportional to 1,038.04, 1,432.37 and 618.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.04 : 1,432.37 = 618.33 : x
2. Step 2: Convert to fraction form
   1,038.04/1,432.37 = 618.33/x
3. Step 3: Cross multiply
   1,038.04x = 1,432.37 × 618.33
4. Step 4: Simplify right side
   1,038.04x = 885,678.89
5. Step 5: Solve for x
   x = 885,678.89/1,038.04
6. Step 6: Final answer
   x = 853.22