Finding the Fourth Proportional to 1,423.56, 1,964.04 and 899.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.56 : 1,964.04 = 899.52 : x
2. Step 2: Convert to fraction form
   1,423.56/1,964.04 = 899.52/x
3. Step 3: Cross multiply
   1,423.56x = 1,964.04 × 899.52
4. Step 4: Simplify right side
   1,423.56x = 1,766,693.26
5. Step 5: Solve for x
   x = 1,766,693.26/1,423.56
6. Step 6: Final answer
   x = 1,241.04