Finding the Fourth Proportional to 1,309.51, 1,802.49 and 1,122.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309.51 : 1,802.49 = 1,122.82 : x
2. Step 2: Convert to fraction form
   1,309.51/1,802.49 = 1,122.82/x
3. Step 3: Cross multiply
   1,309.51x = 1,802.49 × 1,122.82
4. Step 4: Simplify right side
   1,309.51x = 2,023,871.82
5. Step 5: Solve for x
   x = 2,023,871.82/1,309.51
6. Step 6: Final answer
   x = 1,545.52