Finding the Fourth Proportional to 3,012.42, 4,157.34 and 1,686.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.42 : 4,157.34 = 1,686.25 : x
2. Step 2: Convert to fraction form
   3,012.42/4,157.34 = 1,686.25/x
3. Step 3: Cross multiply
   3,012.42x = 4,157.34 × 1,686.25
4. Step 4: Simplify right side
   3,012.42x = 7,010,314.58
5. Step 5: Solve for x
   x = 7,010,314.58/3,012.42
6. Step 6: Final answer
   x = 2,327.14