Finding the Fourth Proportional to 1,678.04, 2,315.72 and 1,014.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.04 : 2,315.72 = 1,014.78 : x
2. Step 2: Convert to fraction form
   1,678.04/2,315.72 = 1,014.78/x
3. Step 3: Cross multiply
   1,678.04x = 2,315.72 × 1,014.78
4. Step 4: Simplify right side
   1,678.04x = 2,349,946.34
5. Step 5: Solve for x
   x = 2,349,946.34/1,678.04
6. Step 6: Final answer
   x = 1,400.41