Finding the Fourth Proportional to 1,768.50, 2,663.04 and 1,309.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.50 : 2,663.04 = 1,309.53 : x
2. Step 2: Convert to fraction form
   1,768.50/2,663.04 = 1,309.53/x
3. Step 3: Cross multiply
   1,768.50x = 2,663.04 × 1,309.53
4. Step 4: Simplify right side
   1,768.50x = 3,487,345.67
5. Step 5: Solve for x
   x = 3,487,345.67/1,768.50
6. Step 6: Final answer
   x = 1,971.92