Finding the Fourth Proportional to 1,650.24, 2,277.32 and 978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.24 : 2,277.32 = 978.08 : x
2. Step 2: Convert to fraction form
   1,650.24/2,277.32 = 978.08/x
3. Step 3: Cross multiply
   1,650.24x = 2,277.32 × 978.08
4. Step 4: Simplify right side
   1,650.24x = 2,227,384.87
5. Step 5: Solve for x
   x = 2,227,384.87/1,650.24
6. Step 6: Final answer
   x = 1,349.73