Finding the Fourth Proportional to 2,280.42, 3,147.03 and 1,285.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.42 : 3,147.03 = 1,285.62 : x
2. Step 2: Convert to fraction form
   2,280.42/3,147.03 = 1,285.62/x
3. Step 3: Cross multiply
   2,280.42x = 3,147.03 × 1,285.62
4. Step 4: Simplify right side
   2,280.42x = 4,045,884.71
5. Step 5: Solve for x
   x = 4,045,884.71/2,280.42
6. Step 6: Final answer
   x = 1,774.18