Finding the Fourth Proportional to 1,783.82, 2,691.43 and 1,722.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.82 : 2,691.43 = 1,722.47 : x
2. Step 2: Convert to fraction form
   1,783.82/2,691.43 = 1,722.47/x
3. Step 3: Cross multiply
   1,783.82x = 2,691.43 × 1,722.47
4. Step 4: Simplify right side
   1,783.82x = 4,635,889.67
5. Step 5: Solve for x
   x = 4,635,889.67/1,783.82
6. Step 6: Final answer
   x = 2,598.85