Finding the Fourth Proportional to 2,377.50, 3,567.62 and 990.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,377.50 : 3,567.62 = 990.88 : x
2. Step 2: Convert to fraction form
   2,377.50/3,567.62 = 990.88/x
3. Step 3: Cross multiply
   2,377.50x = 3,567.62 × 990.88
4. Step 4: Simplify right side
   2,377.50x = 3,535,083.31
5. Step 5: Solve for x
   x = 3,535,083.31/2,377.50
6. Step 6: Final answer
   x = 1,486.89