Finding the Fourth Proportional to 1,397.32, 1,929.33 and 900.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.32 : 1,929.33 = 900.25 : x
2. Step 2: Convert to fraction form
   1,397.32/1,929.33 = 900.25/x
3. Step 3: Cross multiply
   1,397.32x = 1,929.33 × 900.25
4. Step 4: Simplify right side
   1,397.32x = 1,736,874.51
5. Step 5: Solve for x
   x = 1,736,874.51/1,397.32
6. Step 6: Final answer
   x = 1,243.01