Finding the Fourth Proportional to 2,429.80, 3,646.62 and 891.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.80 : 3,646.62 = 891.24 : x
2. Step 2: Convert to fraction form
   2,429.80/3,646.62 = 891.24/x
3. Step 3: Cross multiply
   2,429.80x = 3,646.62 × 891.24
4. Step 4: Simplify right side
   2,429.80x = 3,250,013.61
5. Step 5: Solve for x
   x = 3,250,013.61/2,429.80
6. Step 6: Final answer
   x = 1,337.56