Finding the Fourth Proportional to 1,521.76, 2,100.12 and 892.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.76 : 2,100.12 = 892.48 : x
2. Step 2: Convert to fraction form
   1,521.76/2,100.12 = 892.48/x
3. Step 3: Cross multiply
   1,521.76x = 2,100.12 × 892.48
4. Step 4: Simplify right side
   1,521.76x = 1,874,315.10
5. Step 5: Solve for x
   x = 1,874,315.10/1,521.76
6. Step 6: Final answer
   x = 1,231.68