Finding the Fourth Proportional to 2,877.98, 4,317.39 and 930.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.98 : 4,317.39 = 930.38 : x
2. Step 2: Convert to fraction form
   2,877.98/4,317.39 = 930.38/x
3. Step 3: Cross multiply
   2,877.98x = 4,317.39 × 930.38
4. Step 4: Simplify right side
   2,877.98x = 4,016,813.31
5. Step 5: Solve for x
   x = 4,016,813.31/2,877.98
6. Step 6: Final answer
   x = 1,395.71