Finding the Fourth Proportional to 1,770.39, 2,443.11 and 1,247.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.39 : 2,443.11 = 1,247.52 : x
2. Step 2: Convert to fraction form
   1,770.39/2,443.11 = 1,247.52/x
3. Step 3: Cross multiply
   1,770.39x = 2,443.11 × 1,247.52
4. Step 4: Simplify right side
   1,770.39x = 3,047,828.59
5. Step 5: Solve for x
   x = 3,047,828.59/1,770.39
6. Step 6: Final answer
   x = 1,721.56