Finding the Fourth Proportional to 1,789.61, 2,685.38 and 749.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.61 : 2,685.38 = 749.45 : x
2. Step 2: Convert to fraction form
   1,789.61/2,685.38 = 749.45/x
3. Step 3: Cross multiply
   1,789.61x = 2,685.38 × 749.45
4. Step 4: Simplify right side
   1,789.61x = 2,012,554.29
5. Step 5: Solve for x
   x = 2,012,554.29/1,789.61
6. Step 6: Final answer
   x = 1,124.58