Finding the Fourth Proportional to 2,437.70, 3,657.72 and 978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,437.70 : 3,657.72 = 978.08 : x
2. Step 2: Convert to fraction form
   2,437.70/3,657.72 = 978.08/x
3. Step 3: Cross multiply
   2,437.70x = 3,657.72 × 978.08
4. Step 4: Simplify right side
   2,437.70x = 3,577,542.78
5. Step 5: Solve for x
   x = 3,577,542.78/2,437.70
6. Step 6: Final answer
   x = 1,467.59