Finding the Fourth Proportional to 2,398.76, 3,310.52 and 1,403.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.76 : 3,310.52 = 1,403.98 : x
2. Step 2: Convert to fraction form
   2,398.76/3,310.52 = 1,403.98/x
3. Step 3: Cross multiply
   2,398.76x = 3,310.52 × 1,403.98
4. Step 4: Simplify right side
   2,398.76x = 4,647,903.87
5. Step 5: Solve for x
   x = 4,647,903.87/2,398.76
6. Step 6: Final answer
   x = 1,937.63