Finding the Fourth Proportional to 2,953.10, 4,428.53 and 978.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.10 : 4,428.53 = 978.14 : x
2. Step 2: Convert to fraction form
   2,953.10/4,428.53 = 978.14/x
3. Step 3: Cross multiply
   2,953.10x = 4,428.53 × 978.14
4. Step 4: Simplify right side
   2,953.10x = 4,331,695.30
5. Step 5: Solve for x
   x = 4,331,695.30/2,953.10
6. Step 6: Final answer
   x = 1,466.83