Finding the Fourth Proportional to 3,061.08, 4,590.88 and 869.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.08 : 4,590.88 = 869.28 : x
2. Step 2: Convert to fraction form
   3,061.08/4,590.88 = 869.28/x
3. Step 3: Cross multiply
   3,061.08x = 4,590.88 × 869.28
4. Step 4: Simplify right side
   3,061.08x = 3,990,760.17
5. Step 5: Solve for x
   x = 3,990,760.17/3,061.08
6. Step 6: Final answer
   x = 1,303.71