Finding the Fourth Proportional to 2,156.66, 2,976.83 and 1,400.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.66 : 2,976.83 = 1,400.42 : x
2. Step 2: Convert to fraction form
   2,156.66/2,976.83 = 1,400.42/x
3. Step 3: Cross multiply
   2,156.66x = 2,976.83 × 1,400.42
4. Step 4: Simplify right side
   2,156.66x = 4,168,790.38
5. Step 5: Solve for x
   x = 4,168,790.38/2,156.66
6. Step 6: Final answer
   x = 1,932.99