Finding the Fourth Proportional to 2,866.06, 4,299.76 and 891.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.06 : 4,299.76 = 891.59 : x
2. Step 2: Convert to fraction form
   2,866.06/4,299.76 = 891.59/x
3. Step 3: Cross multiply
   2,866.06x = 4,299.76 × 891.59
4. Step 4: Simplify right side
   2,866.06x = 3,833,624.31
5. Step 5: Solve for x
   x = 3,833,624.31/2,866.06
6. Step 6: Final answer
   x = 1,337.59