Finding the Fourth Proportional to 2,764.05, 4,146.69 and 915.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.05 : 4,146.69 = 915.08 : x
2. Step 2: Convert to fraction form
   2,764.05/4,146.69 = 915.08/x
3. Step 3: Cross multiply
   2,764.05x = 4,146.69 × 915.08
4. Step 4: Simplify right side
   2,764.05x = 3,794,532.35
5. Step 5: Solve for x
   x = 3,794,532.35/2,764.05
6. Step 6: Final answer
   x = 1,372.82