Finding the Fourth Proportional to 1,789.34, 2,681.54 and 1,291.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.34 : 2,681.54 = 1,291.78 : x
2. Step 2: Convert to fraction form
   1,789.34/2,681.54 = 1,291.78/x
3. Step 3: Cross multiply
   1,789.34x = 2,681.54 × 1,291.78
4. Step 4: Simplify right side
   1,789.34x = 3,463,953.28
5. Step 5: Solve for x
   x = 3,463,953.28/1,789.34
6. Step 6: Final answer
   x = 1,935.88