Finding the Fourth Proportional to 2,146.46, 3,212.72 and 1,157.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.46 : 3,212.72 = 1,157.90 : x
2. Step 2: Convert to fraction form
   2,146.46/3,212.72 = 1,157.90/x
3. Step 3: Cross multiply
   2,146.46x = 3,212.72 × 1,157.90
4. Step 4: Simplify right side
   2,146.46x = 3,719,995.32
5. Step 5: Solve for x
   x = 3,719,995.32/2,146.46
6. Step 6: Final answer
   x = 1,733.09