Finding the Fourth Proportional to 1,106.78, 1,525.34 and 1,075.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106.78 : 1,525.34 = 1,075.18 : x
2. Step 2: Convert to fraction form
   1,106.78/1,525.34 = 1,075.18/x
3. Step 3: Cross multiply
   1,106.78x = 1,525.34 × 1,075.18
4. Step 4: Simplify right side
   1,106.78x = 1,640,015.06
5. Step 5: Solve for x
   x = 1,640,015.06/1,106.78
6. Step 6: Final answer
   x = 1,481.79