Finding the Fourth Proportional to 2,317.89, 3,476.62 and 931.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.89 : 3,476.62 = 931.98 : x
2. Step 2: Convert to fraction form
   2,317.89/3,476.62 = 931.98/x
3. Step 3: Cross multiply
   2,317.89x = 3,476.62 × 931.98
4. Step 4: Simplify right side
   2,317.89x = 3,240,140.31
5. Step 5: Solve for x
   x = 3,240,140.31/2,317.89
6. Step 6: Final answer
   x = 1,397.88