Finding the Fourth Proportional to 2,173.50, 2,999.61 and 1,242.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.50 : 2,999.61 = 1,242.18 : x
2. Step 2: Convert to fraction form
   2,173.50/2,999.61 = 1,242.18/x
3. Step 3: Cross multiply
   2,173.50x = 2,999.61 × 1,242.18
4. Step 4: Simplify right side
   2,173.50x = 3,726,055.55
5. Step 5: Solve for x
   x = 3,726,055.55/2,173.50
6. Step 6: Final answer
   x = 1,714.31