Finding the Fourth Proportional to 1,829.49, 2,524.71 and 990.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,829.49 : 2,524.71 = 990.20 : x
2. Step 2: Convert to fraction form
   1,829.49/2,524.71 = 990.20/x
3. Step 3: Cross multiply
   1,829.49x = 2,524.71 × 990.20
4. Step 4: Simplify right side
   1,829.49x = 2,499,962.89
5. Step 5: Solve for x
   x = 2,499,962.89/1,829.49
6. Step 6: Final answer
   x = 1,366.48