Finding the Fourth Proportional to 2,631.42, 3,945.93 and 899.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.42 : 3,945.93 = 899.34 : x
2. Step 2: Convert to fraction form
   2,631.42/3,945.93 = 899.34/x
3. Step 3: Cross multiply
   2,631.42x = 3,945.93 × 899.34
4. Step 4: Simplify right side
   2,631.42x = 3,548,732.69
5. Step 5: Solve for x
   x = 3,548,732.69/2,631.42
6. Step 6: Final answer
   x = 1,348.60