Finding the Fourth Proportional to 1,561.31, 2,343.77 and 793.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.31 : 2,343.77 = 793.43 : x
2. Step 2: Convert to fraction form
   1,561.31/2,343.77 = 793.43/x
3. Step 3: Cross multiply
   1,561.31x = 2,343.77 × 793.43
4. Step 4: Simplify right side
   1,561.31x = 1,859,617.43
5. Step 5: Solve for x
   x = 1,859,617.43/1,561.31
6. Step 6: Final answer
   x = 1,191.06