Finding the Fourth Proportional to 1,075.36, 1,483.86 and 609.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.36 : 1,483.86 = 609.61 : x
2. Step 2: Convert to fraction form
   1,075.36/1,483.86 = 609.61/x
3. Step 3: Cross multiply
   1,075.36x = 1,483.86 × 609.61
4. Step 4: Simplify right side
   1,075.36x = 904,575.89
5. Step 5: Solve for x
   x = 904,575.89/1,075.36
6. Step 6: Final answer
   x = 841.18