Finding the Fourth Proportional to 2,012.90, 3,019.56 and 696.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.90 : 3,019.56 = 696.74 : x
2. Step 2: Convert to fraction form
   2,012.90/3,019.56 = 696.74/x
3. Step 3: Cross multiply
   2,012.90x = 3,019.56 × 696.74
4. Step 4: Simplify right side
   2,012.90x = 2,103,848.23
5. Step 5: Solve for x
   x = 2,103,848.23/2,012.90
6. Step 6: Final answer
   x = 1,045.18