Finding the Fourth Proportional to 4,284.78, 5,915.61 and 2,870.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,284.78 : 5,915.61 = 2,870.52 : x
2. Step 2: Convert to fraction form
   4,284.78/5,915.61 = 2,870.52/x
3. Step 3: Cross multiply
   4,284.78x = 5,915.61 × 2,870.52
4. Step 4: Simplify right side
   4,284.78x = 16,980,876.82
5. Step 5: Solve for x
   x = 16,980,876.82/4,284.78
6. Step 6: Final answer
   x = 3,963.07