Finding the Fourth Proportional to 1,663.69, 2,496.38 and 1,276.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.69 : 2,496.38 = 1,276.18 : x
2. Step 2: Convert to fraction form
   1,663.69/2,496.38 = 1,276.18/x
3. Step 3: Cross multiply
   1,663.69x = 2,496.38 × 1,276.18
4. Step 4: Simplify right side
   1,663.69x = 3,185,830.23
5. Step 5: Solve for x
   x = 3,185,830.23/1,663.69
6. Step 6: Final answer
   x = 1,914.92