Finding the Fourth Proportional to 1,567.79, 2,168.27 and 1,393.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.79 : 2,168.27 = 1,393.30 : x
2. Step 2: Convert to fraction form
   1,567.79/2,168.27 = 1,393.30/x
3. Step 3: Cross multiply
   1,567.79x = 2,168.27 × 1,393.30
4. Step 4: Simplify right side
   1,567.79x = 3,021,051.56
5. Step 5: Solve for x
   x = 3,021,051.56/1,567.79
6. Step 6: Final answer
   x = 1,926.95