Finding the Fourth Proportional to 2,953.63, 4,427.33 and 978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.63 : 4,427.33 = 978.75 : x
2. Step 2: Convert to fraction form
   2,953.63/4,427.33 = 978.75/x
3. Step 3: Cross multiply
   2,953.63x = 4,427.33 × 978.75
4. Step 4: Simplify right side
   2,953.63x = 4,333,244.34
5. Step 5: Solve for x
   x = 4,333,244.34/2,953.63
6. Step 6: Final answer
   x = 1,467.09