Finding the Fourth Proportional to 1,503.78, 2,075.25 and 874.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503.78 : 2,075.25 = 874.29 : x
2. Step 2: Convert to fraction form
   1,503.78/2,075.25 = 874.29/x
3. Step 3: Cross multiply
   1,503.78x = 2,075.25 × 874.29
4. Step 4: Simplify right side
   1,503.78x = 1,814,370.32
5. Step 5: Solve for x
   x = 1,814,370.32/1,503.78
6. Step 6: Final answer
   x = 1,206.54