Finding the Fourth Proportional to 1,071.89, 1,479.31 and 652.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.89 : 1,479.31 = 652.15 : x
2. Step 2: Convert to fraction form
   1,071.89/1,479.31 = 652.15/x
3. Step 3: Cross multiply
   1,071.89x = 1,479.31 × 652.15
4. Step 4: Simplify right side
   1,071.89x = 964,732.02
5. Step 5: Solve for x
   x = 964,732.02/1,071.89
6. Step 6: Final answer
   x = 900.03