Finding the Fourth Proportional to 2,910.55, 4,364.87 and 1,266.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.55 : 4,364.87 = 1,266.61 : x
2. Step 2: Convert to fraction form
   2,910.55/4,364.87 = 1,266.61/x
3. Step 3: Cross multiply
   2,910.55x = 4,364.87 × 1,266.61
4. Step 4: Simplify right side
   2,910.55x = 5,528,569.33
5. Step 5: Solve for x
   x = 5,528,569.33/2,910.55
6. Step 6: Final answer
   x = 1,899.50