Finding the Fourth Proportional to 1,627.55, 2,439.56 and 804.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.55 : 2,439.56 = 804.05 : x
2. Step 2: Convert to fraction form
   1,627.55/2,439.56 = 804.05/x
3. Step 3: Cross multiply
   1,627.55x = 2,439.56 × 804.05
4. Step 4: Simplify right side
   1,627.55x = 1,961,518.03
5. Step 5: Solve for x
   x = 1,961,518.03/1,627.55
6. Step 6: Final answer
   x = 1,205.20