Finding the Fourth Proportional to 1,396.61, 1,927.33 and 767.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.61 : 1,927.33 = 767.04 : x
2. Step 2: Convert to fraction form
   1,396.61/1,927.33 = 767.04/x
3. Step 3: Cross multiply
   1,396.61x = 1,927.33 × 767.04
4. Step 4: Simplify right side
   1,396.61x = 1,478,335.37
5. Step 5: Solve for x
   x = 1,478,335.37/1,396.61
6. Step 6: Final answer
   x = 1,058.52