Finding the Fourth Proportional to 1,014.76, 1,514.93 and 978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.76 : 1,514.93 = 978.76 : x
2. Step 2: Convert to fraction form
   1,014.76/1,514.93 = 978.76/x
3. Step 3: Cross multiply
   1,014.76x = 1,514.93 × 978.76
4. Step 4: Simplify right side
   1,014.76x = 1,482,752.89
5. Step 5: Solve for x
   x = 1,482,752.89/1,014.76
6. Step 6: Final answer
   x = 1,461.19