Finding the Fourth Proportional to 1,354.74, 2,029.59 and 805.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.74 : 2,029.59 = 805.56 : x
2. Step 2: Convert to fraction form
   1,354.74/2,029.59 = 805.56/x
3. Step 3: Cross multiply
   1,354.74x = 2,029.59 × 805.56
4. Step 4: Simplify right side
   1,354.74x = 1,634,956.52
5. Step 5: Solve for x
   x = 1,634,956.52/1,354.74
6. Step 6: Final answer
   x = 1,206.84