Finding the Fourth Proportional to 2,429.86, 3,645.15 and 890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.86 : 3,645.15 = 890.50 : x
2. Step 2: Convert to fraction form
   2,429.86/3,645.15 = 890.50/x
3. Step 3: Cross multiply
   2,429.86x = 3,645.15 × 890.50
4. Step 4: Simplify right side
   2,429.86x = 3,246,006.08
5. Step 5: Solve for x
   x = 3,246,006.08/2,429.86
6. Step 6: Final answer
   x = 1,335.88