Finding the Fourth Proportional to 978.53, 1,469.54 and 900.29

Step by Step Solution

1. Step 1: Write the proportion equation
   978.53 : 1,469.54 = 900.29 : x
2. Step 2: Convert to fraction form
   978.53/1,469.54 = 900.29/x
3. Step 3: Cross multiply
   978.53x = 1,469.54 × 900.29
4. Step 4: Simplify right side
   978.53x = 1,323,018.09
5. Step 5: Solve for x
   x = 1,323,018.09/978.53
6. Step 6: Final answer
   x = 1,352.05