Finding the Fourth Proportional to 978.61, 1,465.59 and 804.06

Step by Step Solution

1. Step 1: Write the proportion equation
   978.61 : 1,465.59 = 804.06 : x
2. Step 2: Convert to fraction form
   978.61/1,465.59 = 804.06/x
3. Step 3: Cross multiply
   978.61x = 1,465.59 × 804.06
4. Step 4: Simplify right side
   978.61x = 1,178,422.30
5. Step 5: Solve for x
   x = 1,178,422.30/978.61
6. Step 6: Final answer
   x = 1,204.18