Finding the Fourth Proportional to 2,431.98, 3,356.10 and 1,384.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.98 : 3,356.10 = 1,384.02 : x
2. Step 2: Convert to fraction form
   2,431.98/3,356.10 = 1,384.02/x
3. Step 3: Cross multiply
   2,431.98x = 3,356.10 × 1,384.02
4. Step 4: Simplify right side
   2,431.98x = 4,644,909.52
5. Step 5: Solve for x
   x = 4,644,909.52/2,431.98
6. Step 6: Final answer
   x = 1,909.93