Finding the Fourth Proportional to 1,789.72, 2,470.54 and 1,126.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.72 : 2,470.54 = 1,126.74 : x
2. Step 2: Convert to fraction form
   1,789.72/2,470.54 = 1,126.74/x
3. Step 3: Cross multiply
   1,789.72x = 2,470.54 × 1,126.74
4. Step 4: Simplify right side
   1,789.72x = 2,783,656.24
5. Step 5: Solve for x
   x = 2,783,656.24/1,789.72
6. Step 6: Final answer
   x = 1,555.36