Finding the Fourth Proportional to 3,061.34, 4,591.79 and 870.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.34 : 4,591.79 = 870.02 : x
2. Step 2: Convert to fraction form
   3,061.34/4,591.79 = 870.02/x
3. Step 3: Cross multiply
   3,061.34x = 4,591.79 × 870.02
4. Step 4: Simplify right side
   3,061.34x = 3,994,929.39
5. Step 5: Solve for x
   x = 3,994,929.39/3,061.34
6. Step 6: Final answer
   x = 1,304.96