Finding the Fourth Proportional to 1,212.52, 1,672.83 and 740.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.52 : 1,672.83 = 740.09 : x
2. Step 2: Convert to fraction form
   1,212.52/1,672.83 = 740.09/x
3. Step 3: Cross multiply
   1,212.52x = 1,672.83 × 740.09
4. Step 4: Simplify right side
   1,212.52x = 1,238,044.75
5. Step 5: Solve for x
   x = 1,238,044.75/1,212.52
6. Step 6: Final answer
   x = 1,021.05