Finding the Fourth Proportional to 2,073.42, 2,861.35 and 1,189.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.42 : 2,861.35 = 1,189.31 : x
2. Step 2: Convert to fraction form
   2,073.42/2,861.35 = 1,189.31/x
3. Step 3: Cross multiply
   2,073.42x = 2,861.35 × 1,189.31
4. Step 4: Simplify right side
   2,073.42x = 3,403,014.89
5. Step 5: Solve for x
   x = 3,403,014.89/2,073.42
6. Step 6: Final answer
   x = 1,641.26