Finding the Fourth Proportional to 3,898.72, 5,847.54 and 1,266.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.72 : 5,847.54 = 1,266.22 : x
2. Step 2: Convert to fraction form
   3,898.72/5,847.54 = 1,266.22/x
3. Step 3: Cross multiply
   3,898.72x = 5,847.54 × 1,266.22
4. Step 4: Simplify right side
   3,898.72x = 7,404,272.10
5. Step 5: Solve for x
   x = 7,404,272.10/3,898.72
6. Step 6: Final answer
   x = 1,899.15