Finding the Fourth Proportional to 1,342.24, 1,852.05 and 810.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.24 : 1,852.05 = 810.97 : x
2. Step 2: Convert to fraction form
   1,342.24/1,852.05 = 810.97/x
3. Step 3: Cross multiply
   1,342.24x = 1,852.05 × 810.97
4. Step 4: Simplify right side
   1,342.24x = 1,501,956.99
5. Step 5: Solve for x
   x = 1,501,956.99/1,342.24
6. Step 6: Final answer
   x = 1,118.99