Finding the Fourth Proportional to 2,124.87, 3,188.52 and 892.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.87 : 3,188.52 = 892.17 : x
2. Step 2: Convert to fraction form
   2,124.87/3,188.52 = 892.17/x
3. Step 3: Cross multiply
   2,124.87x = 3,188.52 × 892.17
4. Step 4: Simplify right side
   2,124.87x = 2,844,701.89
5. Step 5: Solve for x
   x = 2,844,701.89/2,124.87
6. Step 6: Final answer
   x = 1,338.77