Finding the Fourth Proportional to 1,772.69, 2,445.59 and 1,072.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.69 : 2,445.59 = 1,072.85 : x
2. Step 2: Convert to fraction form
   1,772.69/2,445.59 = 1,072.85/x
3. Step 3: Cross multiply
   1,772.69x = 2,445.59 × 1,072.85
4. Step 4: Simplify right side
   1,772.69x = 2,623,741.69
5. Step 5: Solve for x
   x = 2,623,741.69/1,772.69
6. Step 6: Final answer
   x = 1,480.09