Finding the Fourth Proportional to 1,770.42, 2,443.42 and 1,211.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.42 : 2,443.42 = 1,211.46 : x
2. Step 2: Convert to fraction form
   1,770.42/2,443.42 = 1,211.46/x
3. Step 3: Cross multiply
   1,770.42x = 2,443.42 × 1,211.46
4. Step 4: Simplify right side
   1,770.42x = 2,960,105.59
5. Step 5: Solve for x
   x = 2,960,105.59/1,770.42
6. Step 6: Final answer
   x = 1,671.98