Finding the Fourth Proportional to 1,124.00, 1,684.86 and 712.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.00 : 1,684.86 = 712.34 : x
2. Step 2: Convert to fraction form
   1,124.00/1,684.86 = 712.34/x
3. Step 3: Cross multiply
   1,124.00x = 1,684.86 × 712.34
4. Step 4: Simplify right side
   1,124.00x = 1,200,184.75
5. Step 5: Solve for x
   x = 1,200,184.75/1,124.00
6. Step 6: Final answer
   x = 1,067.78