Finding the Fourth Proportional to 1,806.48, 2,495.00 and 1,215.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.48 : 2,495.00 = 1,215.99 : x
2. Step 2: Convert to fraction form
   1,806.48/2,495.00 = 1,215.99/x
3. Step 3: Cross multiply
   1,806.48x = 2,495.00 × 1,215.99
4. Step 4: Simplify right side
   1,806.48x = 3,033,904.33
5. Step 5: Solve for x
   x = 3,033,904.33/1,806.48
6. Step 6: Final answer
   x = 1,679.45