Finding the Fourth Proportional to 3,061.23, 4,592.02 and 869.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.23 : 4,592.02 = 869.78 : x
2. Step 2: Convert to fraction form
   3,061.23/4,592.02 = 869.78/x
3. Step 3: Cross multiply
   3,061.23x = 4,592.02 × 869.78
4. Step 4: Simplify right side
   3,061.23x = 3,994,047.16
5. Step 5: Solve for x
   x = 3,994,047.16/3,061.23
6. Step 6: Final answer
   x = 1,304.72