Finding the Fourth Proportional to 2,925.82, 4,388.96 and 978.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,925.82 : 4,388.96 = 978.02 : x
2. Step 2: Convert to fraction form
   2,925.82/4,388.96 = 978.02/x
3. Step 3: Cross multiply
   2,925.82x = 4,388.96 × 978.02
4. Step 4: Simplify right side
   2,925.82x = 4,292,490.66
5. Step 5: Solve for x
   x = 4,292,490.66/2,925.82
6. Step 6: Final answer
   x = 1,467.11