Finding the Fourth Proportional to 1,776.86, 2,452.02 and 990.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.86 : 2,452.02 = 990.98 : x
2. Step 2: Convert to fraction form
   1,776.86/2,452.02 = 990.98/x
3. Step 3: Cross multiply
   1,776.86x = 2,452.02 × 990.98
4. Step 4: Simplify right side
   1,776.86x = 2,429,902.78
5. Step 5: Solve for x
   x = 2,429,902.78/1,776.86
6. Step 6: Final answer
   x = 1,367.53