Finding the Fourth Proportional to 2,847.72, 4,271.12 and 899.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,847.72 : 4,271.12 = 899.48 : x
2. Step 2: Convert to fraction form
   2,847.72/4,271.12 = 899.48/x
3. Step 3: Cross multiply
   2,847.72x = 4,271.12 × 899.48
4. Step 4: Simplify right side
   2,847.72x = 3,841,787.02
5. Step 5: Solve for x
   x = 3,841,787.02/2,847.72
6. Step 6: Final answer
   x = 1,349.07