Finding the Fourth Proportional to 2,487.34, 3,431.86 and 1,602.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.34 : 3,431.86 = 1,602.42 : x
2. Step 2: Convert to fraction form
   2,487.34/3,431.86 = 1,602.42/x
3. Step 3: Cross multiply
   2,487.34x = 3,431.86 × 1,602.42
4. Step 4: Simplify right side
   2,487.34x = 5,499,281.10
5. Step 5: Solve for x
   x = 5,499,281.10/2,487.34
6. Step 6: Final answer
   x = 2,210.91