Finding the Fourth Proportional to 2,073.60, 2,861.76 and 1,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.60 : 2,861.76 = 1,189.50 : x
2. Step 2: Convert to fraction form
   2,073.60/2,861.76 = 1,189.50/x
3. Step 3: Cross multiply
   2,073.60x = 2,861.76 × 1,189.50
4. Step 4: Simplify right side
   2,073.60x = 3,404,063.52
5. Step 5: Solve for x
   x = 3,404,063.52/2,073.60
6. Step 6: Final answer
   x = 1,641.62