Finding the Fourth Proportional to 1,594.02, 2,391.57 and 978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,594.02 : 2,391.57 = 978.15 : x
2. Step 2: Convert to fraction form
   1,594.02/2,391.57 = 978.15/x
3. Step 3: Cross multiply
   1,594.02x = 2,391.57 × 978.15
4. Step 4: Simplify right side
   1,594.02x = 2,339,314.20
5. Step 5: Solve for x
   x = 2,339,314.20/1,594.02
6. Step 6: Final answer
   x = 1,467.56