Finding the Fourth Proportional to 1,722.22, 2,581.72 and 899.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.22 : 2,581.72 = 899.52 : x
2. Step 2: Convert to fraction form
   1,722.22/2,581.72 = 899.52/x
3. Step 3: Cross multiply
   1,722.22x = 2,581.72 × 899.52
4. Step 4: Simplify right side
   1,722.22x = 2,322,308.77
5. Step 5: Solve for x
   x = 2,322,308.77/1,722.22
6. Step 6: Final answer
   x = 1,348.44