Finding the Fourth Proportional to 1,211.94, 1,672.33 and 740.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211.94 : 1,672.33 = 740.10 : x
2. Step 2: Convert to fraction form
   1,211.94/1,672.33 = 740.10/x
3. Step 3: Cross multiply
   1,211.94x = 1,672.33 × 740.10
4. Step 4: Simplify right side
   1,211.94x = 1,237,687.83
5. Step 5: Solve for x
   x = 1,237,687.83/1,211.94
6. Step 6: Final answer
   x = 1,021.25