Finding the Fourth Proportional to 2,816.42, 4,223.34 and 1,171.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.42 : 4,223.34 = 1,171.98 : x
2. Step 2: Convert to fraction form
   2,816.42/4,223.34 = 1,171.98/x
3. Step 3: Cross multiply
   2,816.42x = 4,223.34 × 1,171.98
4. Step 4: Simplify right side
   2,816.42x = 4,949,670.01
5. Step 5: Solve for x
   x = 4,949,670.01/2,816.42
6. Step 6: Final answer
   x = 1,757.44