Finding the Fourth Proportional to 2,172.83, 2,998.49 and 1,178.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.83 : 2,998.49 = 1,178.10 : x
2. Step 2: Convert to fraction form
   2,172.83/2,998.49 = 1,178.10/x
3. Step 3: Cross multiply
   2,172.83x = 2,998.49 × 1,178.10
4. Step 4: Simplify right side
   2,172.83x = 3,532,515.18
5. Step 5: Solve for x
   x = 3,532,515.18/2,172.83
6. Step 6: Final answer
   x = 1,625.77