Finding the Fourth Proportional to 1,956.21, 2,932.27 and 915.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.21 : 2,932.27 = 915.34 : x
2. Step 2: Convert to fraction form
   1,956.21/2,932.27 = 915.34/x
3. Step 3: Cross multiply
   1,956.21x = 2,932.27 × 915.34
4. Step 4: Simplify right side
   1,956.21x = 2,684,004.78
5. Step 5: Solve for x
   x = 2,684,004.78/1,956.21
6. Step 6: Final answer
   x = 1,372.04