Finding the Fourth Proportional to 2,899.89, 4,002.48 and 1,781.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,899.89 : 4,002.48 = 1,781.42 : x
2. Step 2: Convert to fraction form
   2,899.89/4,002.48 = 1,781.42/x
3. Step 3: Cross multiply
   2,899.89x = 4,002.48 × 1,781.42
4. Step 4: Simplify right side
   2,899.89x = 7,130,077.91
5. Step 5: Solve for x
   x = 7,130,077.91/2,899.89
6. Step 6: Final answer
   x = 2,458.74