Finding the Fourth Proportional to 1,367.69, 1,886.35 and 1,210.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.69 : 1,886.35 = 1,210.49 : x
2. Step 2: Convert to fraction form
   1,367.69/1,886.35 = 1,210.49/x
3. Step 3: Cross multiply
   1,367.69x = 1,886.35 × 1,210.49
4. Step 4: Simplify right side
   1,367.69x = 2,283,401.76
5. Step 5: Solve for x
   x = 2,283,401.76/1,367.69
6. Step 6: Final answer
   x = 1,669.53