Finding the Fourth Proportional to 2,349.91, 3,242.82 and 1,287.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,349.91 : 3,242.82 = 1,287.69 : x
2. Step 2: Convert to fraction form
   2,349.91/3,242.82 = 1,287.69/x
3. Step 3: Cross multiply
   2,349.91x = 3,242.82 × 1,287.69
4. Step 4: Simplify right side
   2,349.91x = 4,175,746.89
5. Step 5: Solve for x
   x = 4,175,746.89/2,349.91
6. Step 6: Final answer
   x = 1,776.98