Finding the Fourth Proportional to 3,061.76, 4,593.49 and 870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.76 : 4,593.49 = 870.50 : x
2. Step 2: Convert to fraction form
   3,061.76/4,593.49 = 870.50/x
3. Step 3: Cross multiply
   3,061.76x = 4,593.49 × 870.50
4. Step 4: Simplify right side
   3,061.76x = 3,998,642.35
5. Step 5: Solve for x
   x = 3,998,642.35/3,061.76
6. Step 6: Final answer
   x = 1,306.00