Finding the Fourth Proportional to 1,809.69, 2,712.71 and 714.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.69 : 2,712.71 = 714.83 : x
2. Step 2: Convert to fraction form
   1,809.69/2,712.71 = 714.83/x
3. Step 3: Cross multiply
   1,809.69x = 2,712.71 × 714.83
4. Step 4: Simplify right side
   1,809.69x = 1,939,109.35
5. Step 5: Solve for x
   x = 1,939,109.35/1,809.69
6. Step 6: Final answer
   x = 1,071.51