Finding the Fourth Proportional to 2,349.67, 3,242.52 and 1,287.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,349.67 : 3,242.52 = 1,287.42 : x
2. Step 2: Convert to fraction form
   2,349.67/3,242.52 = 1,287.42/x
3. Step 3: Cross multiply
   2,349.67x = 3,242.52 × 1,287.42
4. Step 4: Simplify right side
   2,349.67x = 4,174,485.10
5. Step 5: Solve for x
   x = 4,174,485.10/2,349.67
6. Step 6: Final answer
   x = 1,776.63