Finding the Fourth Proportional to 1,743.69, 2,407.18 and 1,219.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.69 : 2,407.18 = 1,219.89 : x
2. Step 2: Convert to fraction form
   1,743.69/2,407.18 = 1,219.89/x
3. Step 3: Cross multiply
   1,743.69x = 2,407.18 × 1,219.89
4. Step 4: Simplify right side
   1,743.69x = 2,936,494.81
5. Step 5: Solve for x
   x = 2,936,494.81/1,743.69
6. Step 6: Final answer
   x = 1,684.07