Finding the Fourth Proportional to 2,814.29, 4,219.15 and 1,172.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,814.29 : 4,219.15 = 1,172.07 : x
2. Step 2: Convert to fraction form
   2,814.29/4,219.15 = 1,172.07/x
3. Step 3: Cross multiply
   2,814.29x = 4,219.15 × 1,172.07
4. Step 4: Simplify right side
   2,814.29x = 4,945,118.04
5. Step 5: Solve for x
   x = 4,945,118.04/2,814.29
6. Step 6: Final answer
   x = 1,757.15