Finding the Fourth Proportional to 1,463.22, 2,196.48 and 915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,463.22 : 2,196.48 = 915.72 : x
2. Step 2: Convert to fraction form
   1,463.22/2,196.48 = 915.72/x
3. Step 3: Cross multiply
   1,463.22x = 2,196.48 × 915.72
4. Step 4: Simplify right side
   1,463.22x = 2,011,360.67
5. Step 5: Solve for x
   x = 2,011,360.67/1,463.22
6. Step 6: Final answer
   x = 1,374.61