Finding the Fourth Proportional to 1,124.52, 1,678.73 and 1,116.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.52 : 1,678.73 = 1,116.76 : x
2. Step 2: Convert to fraction form
   1,124.52/1,678.73 = 1,116.76/x
3. Step 3: Cross multiply
   1,124.52x = 1,678.73 × 1,116.76
4. Step 4: Simplify right side
   1,124.52x = 1,874,738.51
5. Step 5: Solve for x
   x = 1,874,738.51/1,124.52
6. Step 6: Final answer
   x = 1,667.15