Finding the Fourth Proportional to 1,817.98, 2,508.06 and 1,188.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.98 : 2,508.06 = 1,188.76 : x
2. Step 2: Convert to fraction form
   1,817.98/2,508.06 = 1,188.76/x
3. Step 3: Cross multiply
   1,817.98x = 2,508.06 × 1,188.76
4. Step 4: Simplify right side
   1,817.98x = 2,981,481.41
5. Step 5: Solve for x
   x = 2,981,481.41/1,817.98
6. Step 6: Final answer
   x = 1,640.00