Finding the Fourth Proportional to 1,484.22, 2,229.32 and 899.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.22 : 2,229.32 = 899.81 : x
2. Step 2: Convert to fraction form
   1,484.22/2,229.32 = 899.81/x
3. Step 3: Cross multiply
   1,484.22x = 2,229.32 × 899.81
4. Step 4: Simplify right side
   1,484.22x = 2,005,963.89
5. Step 5: Solve for x
   x = 2,005,963.89/1,484.22
6. Step 6: Final answer
   x = 1,351.52