Finding the Fourth Proportional to 978.72, 1,468.44 and 705.12

Step by Step Solution

1. Step 1: Write the proportion equation
   978.72 : 1,468.44 = 705.12 : x
2. Step 2: Convert to fraction form
   978.72/1,468.44 = 705.12/x
3. Step 3: Cross multiply
   978.72x = 1,468.44 × 705.12
4. Step 4: Simplify right side
   978.72x = 1,035,426.41
5. Step 5: Solve for x
   x = 1,035,426.41/978.72
6. Step 6: Final answer
   x = 1,057.94