Finding the Fourth Proportional to 1,757.51, 2,637.78 and 978.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,757.51 : 2,637.78 = 978.29 : x
2. Step 2: Convert to fraction form
   1,757.51/2,637.78 = 978.29/x
3. Step 3: Cross multiply
   1,757.51x = 2,637.78 × 978.29
4. Step 4: Simplify right side
   1,757.51x = 2,580,513.80
5. Step 5: Solve for x
   x = 2,580,513.80/1,757.51
6. Step 6: Final answer
   x = 1,468.28