Finding the Fourth Proportional to 2,012.50, 3,019.20 and 696.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.50 : 3,019.20 = 696.43 : x
2. Step 2: Convert to fraction form
   2,012.50/3,019.20 = 696.43/x
3. Step 3: Cross multiply
   2,012.50x = 3,019.20 × 696.43
4. Step 4: Simplify right side
   2,012.50x = 2,102,661.46
5. Step 5: Solve for x
   x = 2,102,661.46/2,012.50
6. Step 6: Final answer
   x = 1,044.80