Finding the Fourth Proportional to 2,881.37, 4,321.54 and 800.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,881.37 : 4,321.54 = 800.86 : x
2. Step 2: Convert to fraction form
   2,881.37/4,321.54 = 800.86/x
3. Step 3: Cross multiply
   2,881.37x = 4,321.54 × 800.86
4. Step 4: Simplify right side
   2,881.37x = 3,460,922.91
5. Step 5: Solve for x
   x = 3,460,922.91/2,881.37
6. Step 6: Final answer
   x = 1,201.14