Finding the Fourth Proportional to 2,124.86, 2,932.32 and 1,228.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.86 : 2,932.32 = 1,228.58 : x
2. Step 2: Convert to fraction form
   2,124.86/2,932.32 = 1,228.58/x
3. Step 3: Cross multiply
   2,124.86x = 2,932.32 × 1,228.58
4. Step 4: Simplify right side
   2,124.86x = 3,602,589.71
5. Step 5: Solve for x
   x = 3,602,589.71/2,124.86
6. Step 6: Final answer
   x = 1,695.45