Finding the Fourth Proportional to 1,738.72, 2,606.46 and 872.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.72 : 2,606.46 = 872.02 : x
2. Step 2: Convert to fraction form
   1,738.72/2,606.46 = 872.02/x
3. Step 3: Cross multiply
   1,738.72x = 2,606.46 × 872.02
4. Step 4: Simplify right side
   1,738.72x = 2,272,885.25
5. Step 5: Solve for x
   x = 2,272,885.25/1,738.72
6. Step 6: Final answer
   x = 1,307.22