Finding the Fourth Proportional to 2,642.04, 3,962.42 and 887.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.04 : 3,962.42 = 887.10 : x
2. Step 2: Convert to fraction form
   2,642.04/3,962.42 = 887.10/x
3. Step 3: Cross multiply
   2,642.04x = 3,962.42 × 887.10
4. Step 4: Simplify right side
   2,642.04x = 3,515,058.35
5. Step 5: Solve for x
   x = 3,515,058.35/2,642.04
6. Step 6: Final answer
   x = 1,330.43