Finding the Fourth Proportional to 1,152.12, 1,729.12 and 604.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.12 : 1,729.12 = 604.80 : x
2. Step 2: Convert to fraction form
   1,152.12/1,729.12 = 604.80/x
3. Step 3: Cross multiply
   1,152.12x = 1,729.12 × 604.80
4. Step 4: Simplify right side
   1,152.12x = 1,045,771.78
5. Step 5: Solve for x
   x = 1,045,771.78/1,152.12
6. Step 6: Final answer
   x = 907.69