Finding the Fourth Proportional to 1,806.76, 2,492.58 and 1,217.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.76 : 2,492.58 = 1,217.48 : x
2. Step 2: Convert to fraction form
   1,806.76/2,492.58 = 1,217.48/x
3. Step 3: Cross multiply
   1,806.76x = 2,492.58 × 1,217.48
4. Step 4: Simplify right side
   1,806.76x = 3,034,666.30
5. Step 5: Solve for x
   x = 3,034,666.30/1,806.76
6. Step 6: Final answer
   x = 1,679.62