Finding the Fourth Proportional to 1,228.59, 1,839.83 and 1,124.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.59 : 1,839.83 = 1,124.89 : x
2. Step 2: Convert to fraction form
   1,228.59/1,839.83 = 1,124.89/x
3. Step 3: Cross multiply
   1,228.59x = 1,839.83 × 1,124.89
4. Step 4: Simplify right side
   1,228.59x = 2,069,596.14
5. Step 5: Solve for x
   x = 2,069,596.14/1,228.59
6. Step 6: Final answer
   x = 1,684.53