Finding the Fourth Proportional to 1,076.40, 1,485.50 and 604.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.40 : 1,485.50 = 604.32 : x
2. Step 2: Convert to fraction form
   1,076.40/1,485.50 = 604.32/x
3. Step 3: Cross multiply
   1,076.40x = 1,485.50 × 604.32
4. Step 4: Simplify right side
   1,076.40x = 897,714.34
5. Step 5: Solve for x
   x = 897,714.34/1,076.40
6. Step 6: Final answer
   x = 834.00