Finding the Fourth Proportional to 1,078.71, 1,488.53 and 606.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.71 : 1,488.53 = 606.57 : x
2. Step 2: Convert to fraction form
   1,078.71/1,488.53 = 606.57/x
3. Step 3: Cross multiply
   1,078.71x = 1,488.53 × 606.57
4. Step 4: Simplify right side
   1,078.71x = 902,897.64
5. Step 5: Solve for x
   x = 902,897.64/1,078.71
6. Step 6: Final answer
   x = 837.02