Finding the Fourth Proportional to 1,130.38, 1,693.89 and 926.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,130.38 : 1,693.89 = 926.38 : x
2. Step 2: Convert to fraction form
   1,130.38/1,693.89 = 926.38/x
3. Step 3: Cross multiply
   1,130.38x = 1,693.89 × 926.38
4. Step 4: Simplify right side
   1,130.38x = 1,569,185.82
5. Step 5: Solve for x
   x = 1,569,185.82/1,130.38
6. Step 6: Final answer
   x = 1,388.19