Finding the Fourth Proportional to 2,112.07, 3,165.90 and 724.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.07 : 3,165.90 = 724.93 : x
2. Step 2: Convert to fraction form
   2,112.07/3,165.90 = 724.93/x
3. Step 3: Cross multiply
   2,112.07x = 3,165.90 × 724.93
4. Step 4: Simplify right side
   2,112.07x = 2,295,055.89
5. Step 5: Solve for x
   x = 2,295,055.89/2,112.07
6. Step 6: Final answer
   x = 1,086.64