Finding the Fourth Proportional to 1,842.45, 2,761.59 and 800.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842.45 : 2,761.59 = 800.89 : x
2. Step 2: Convert to fraction form
   1,842.45/2,761.59 = 800.89/x
3. Step 3: Cross multiply
   1,842.45x = 2,761.59 × 800.89
4. Step 4: Simplify right side
   1,842.45x = 2,211,725.91
5. Step 5: Solve for x
   x = 2,211,725.91/1,842.45
6. Step 6: Final answer
   x = 1,200.43