Finding the Fourth Proportional to 1,144.19, 1,707.95 and 1,072.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.19 : 1,707.95 = 1,072.10 : x
2. Step 2: Convert to fraction form
   1,144.19/1,707.95 = 1,072.10/x
3. Step 3: Cross multiply
   1,144.19x = 1,707.95 × 1,072.10
4. Step 4: Simplify right side
   1,144.19x = 1,831,100.15
5. Step 5: Solve for x
   x = 1,831,100.15/1,144.19
6. Step 6: Final answer
   x = 1,600.34