Finding the Fourth Proportional to 1,631.34, 2,433.24 and 1,385.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631.34 : 2,433.24 = 1,385.10 : x
2. Step 2: Convert to fraction form
   1,631.34/2,433.24 = 1,385.10/x
3. Step 3: Cross multiply
   1,631.34x = 2,433.24 × 1,385.10
4. Step 4: Simplify right side
   1,631.34x = 3,370,280.72
5. Step 5: Solve for x
   x = 3,370,280.72/1,631.34
6. Step 6: Final answer
   x = 2,065.96