Finding the Fourth Proportional to 2,806.63, 4,210.55 and 1,075.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.63 : 4,210.55 = 1,075.25 : x
2. Step 2: Convert to fraction form
   2,806.63/4,210.55 = 1,075.25/x
3. Step 3: Cross multiply
   2,806.63x = 4,210.55 × 1,075.25
4. Step 4: Simplify right side
   2,806.63x = 4,527,393.89
5. Step 5: Solve for x
   x = 4,527,393.89/2,806.63
6. Step 6: Final answer
   x = 1,613.11