Finding the Fourth Proportional to 1,396.93, 1,927.72 and 807.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.93 : 1,927.72 = 807.56 : x
2. Step 2: Convert to fraction form
   1,396.93/1,927.72 = 807.56/x
3. Step 3: Cross multiply
   1,396.93x = 1,927.72 × 807.56
4. Step 4: Simplify right side
   1,396.93x = 1,556,749.56
5. Step 5: Solve for x
   x = 1,556,749.56/1,396.93
6. Step 6: Final answer
   x = 1,114.41