Finding the Fourth Proportional to 1,777.34, 2,452.86 and 991.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.34 : 2,452.86 = 991.52 : x
2. Step 2: Convert to fraction form
   1,777.34/2,452.86 = 991.52/x
3. Step 3: Cross multiply
   1,777.34x = 2,452.86 × 991.52
4. Step 4: Simplify right side
   1,777.34x = 2,432,059.75
5. Step 5: Solve for x
   x = 2,432,059.75/1,777.34
6. Step 6: Final answer
   x = 1,368.37