Finding the Fourth Proportional to 1,196.02, 1,650.09 and 915.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.02 : 1,650.09 = 915.80 : x
2. Step 2: Convert to fraction form
   1,196.02/1,650.09 = 915.80/x
3. Step 3: Cross multiply
   1,196.02x = 1,650.09 × 915.80
4. Step 4: Simplify right side
   1,196.02x = 1,511,152.42
5. Step 5: Solve for x
   x = 1,511,152.42/1,196.02
6. Step 6: Final answer
   x = 1,263.48