Finding the Fourth Proportional to 2,477.89, 3,718.28 and 939.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.89 : 3,718.28 = 939.97 : x
2. Step 2: Convert to fraction form
   2,477.89/3,718.28 = 939.97/x
3. Step 3: Cross multiply
   2,477.89x = 3,718.28 × 939.97
4. Step 4: Simplify right side
   2,477.89x = 3,495,071.65
5. Step 5: Solve for x
   x = 3,495,071.65/2,477.89
6. Step 6: Final answer
   x = 1,410.50