Finding the Fourth Proportional to 2,764.77, 4,146.79 and 915.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.77 : 4,146.79 = 915.42 : x
2. Step 2: Convert to fraction form
   2,764.77/4,146.79 = 915.42/x
3. Step 3: Cross multiply
   2,764.77x = 4,146.79 × 915.42
4. Step 4: Simplify right side
   2,764.77x = 3,796,054.50
5. Step 5: Solve for x
   x = 3,796,054.50/2,764.77
6. Step 6: Final answer
   x = 1,373.01