Finding the Fourth Proportional to 1,397.08, 1,927.76 and 807.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.08 : 1,927.76 = 807.52 : x
2. Step 2: Convert to fraction form
   1,397.08/1,927.76 = 807.52/x
3. Step 3: Cross multiply
   1,397.08x = 1,927.76 × 807.52
4. Step 4: Simplify right side
   1,397.08x = 1,556,704.76
5. Step 5: Solve for x
   x = 1,556,704.76/1,397.08
6. Step 6: Final answer
   x = 1,114.26