Finding the Fourth Proportional to 2,878.57, 4,316.37 and 930.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.57 : 4,316.37 = 930.52 : x
2. Step 2: Convert to fraction form
   2,878.57/4,316.37 = 930.52/x
3. Step 3: Cross multiply
   2,878.57x = 4,316.37 × 930.52
4. Step 4: Simplify right side
   2,878.57x = 4,016,468.61
5. Step 5: Solve for x
   x = 4,016,468.61/2,878.57
6. Step 6: Final answer
   x = 1,395.30