Finding the Fourth Proportional to 2,817.31, 4,226.35 and 1,173.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.31 : 4,226.35 = 1,173.47 : x
2. Step 2: Convert to fraction form
   2,817.31/4,226.35 = 1,173.47/x
3. Step 3: Cross multiply
   2,817.31x = 4,226.35 × 1,173.47
4. Step 4: Simplify right side
   2,817.31x = 4,959,500.89
5. Step 5: Solve for x
   x = 4,959,500.89/2,817.31
6. Step 6: Final answer
   x = 1,760.37