Finding the Fourth Proportional to 1,397.53, 1,927.57 and 900.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.53 : 1,927.57 = 900.67 : x
2. Step 2: Convert to fraction form
   1,397.53/1,927.57 = 900.67/x
3. Step 3: Cross multiply
   1,397.53x = 1,927.57 × 900.67
4. Step 4: Simplify right side
   1,397.53x = 1,736,104.47
5. Step 5: Solve for x
   x = 1,736,104.47/1,397.53
6. Step 6: Final answer
   x = 1,242.27