Finding the Fourth Proportional to 1,789.59, 2,680.65 and 1,242.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.59 : 2,680.65 = 1,242.84 : x
2. Step 2: Convert to fraction form
   1,789.59/2,680.65 = 1,242.84/x
3. Step 3: Cross multiply
   1,789.59x = 2,680.65 × 1,242.84
4. Step 4: Simplify right side
   1,789.59x = 3,331,619.05
5. Step 5: Solve for x
   x = 3,331,619.05/1,789.59
6. Step 6: Final answer
   x = 1,861.67