Finding the Fourth Proportional to 1,368.02, 2,053.25 and 978

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.02 : 2,053.25 = 978 : x
2. Step 2: Convert to fraction form
   1,368.02/2,053.25 = 978/x
3. Step 3: Cross multiply
   1,368.02x = 2,053.25 × 978
4. Step 4: Simplify right side
   1,368.02x = 2,008,073.61
5. Step 5: Solve for x
   x = 2,008,073.61/1,368.02
6. Step 6: Final answer
   x = 1,467.87