Finding the Fourth Proportional to 2,678.64, 4,016.52 and 947.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.64 : 4,016.52 = 947.04 : x
2. Step 2: Convert to fraction form
   2,678.64/4,016.52 = 947.04/x
3. Step 3: Cross multiply
   2,678.64x = 4,016.52 × 947.04
4. Step 4: Simplify right side
   2,678.64x = 3,803,805.10
5. Step 5: Solve for x
   x = 3,803,805.10/2,678.64
6. Step 6: Final answer
   x = 1,420.05