Finding the Fourth Proportional to 2,764.41, 4,147.83 and 915.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.41 : 4,147.83 = 915.79 : x
2. Step 2: Convert to fraction form
   2,764.41/4,147.83 = 915.79/x
3. Step 3: Cross multiply
   2,764.41x = 4,147.83 × 915.79
4. Step 4: Simplify right side
   2,764.41x = 3,798,541.24
5. Step 5: Solve for x
   x = 3,798,541.24/2,764.41
6. Step 6: Final answer
   x = 1,374.09