Finding the Fourth Proportional to 2,124.02, 3,185.12 and 890.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.02 : 3,185.12 = 890.60 : x
2. Step 2: Convert to fraction form
   2,124.02/3,185.12 = 890.60/x
3. Step 3: Cross multiply
   2,124.02x = 3,185.12 × 890.60
4. Step 4: Simplify right side
   2,124.02x = 2,836,654.17
5. Step 5: Solve for x
   x = 2,836,654.17/2,124.02
6. Step 6: Final answer
   x = 1,335.51