Finding the Fourth Proportional to 1,776.89, 2,452.23 and 990.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.89 : 2,452.23 = 990.94 : x
2. Step 2: Convert to fraction form
   1,776.89/2,452.23 = 990.94/x
3. Step 3: Cross multiply
   1,776.89x = 2,452.23 × 990.94
4. Step 4: Simplify right side
   1,776.89x = 2,430,002.07
5. Step 5: Solve for x
   x = 2,430,002.07/1,776.89
6. Step 6: Final answer
   x = 1,367.56