Finding the Fourth Proportional to 2,157.32, 3,233.61 and 1,230.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.32 : 3,233.61 = 1,230.86 : x
2. Step 2: Convert to fraction form
   2,157.32/3,233.61 = 1,230.86/x
3. Step 3: Cross multiply
   2,157.32x = 3,233.61 × 1,230.86
4. Step 4: Simplify right side
   2,157.32x = 3,980,101.96
5. Step 5: Solve for x
   x = 3,980,101.96/2,157.32
6. Step 6: Final answer
   x = 1,844.93