Finding the Fourth Proportional to 1,521.84, 2,100.15 and 892.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.84 : 2,100.15 = 892.39 : x
2. Step 2: Convert to fraction form
   1,521.84/2,100.15 = 892.39/x
3. Step 3: Cross multiply
   1,521.84x = 2,100.15 × 892.39
4. Step 4: Simplify right side
   1,521.84x = 1,874,152.86
5. Step 5: Solve for x
   x = 1,874,152.86/1,521.84
6. Step 6: Final answer
   x = 1,231.50