Finding the Fourth Proportional to 2,073.48, 2,861.78 and 1,189.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.48 : 2,861.78 = 1,189.88 : x
2. Step 2: Convert to fraction form
   2,073.48/2,861.78 = 1,189.88/x
3. Step 3: Cross multiply
   2,073.48x = 2,861.78 × 1,189.88
4. Step 4: Simplify right side
   2,073.48x = 3,405,174.79
5. Step 5: Solve for x
   x = 3,405,174.79/2,073.48
6. Step 6: Final answer
   x = 1,642.25