Finding the Fourth Proportional to 1,398.53, 1,929.41 and 901.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.53 : 1,929.41 = 901.46 : x
2. Step 2: Convert to fraction form
   1,398.53/1,929.41 = 901.46/x
3. Step 3: Cross multiply
   1,398.53x = 1,929.41 × 901.46
4. Step 4: Simplify right side
   1,398.53x = 1,739,271.78
5. Step 5: Solve for x
   x = 1,739,271.78/1,398.53
6. Step 6: Final answer
   x = 1,243.65