Finding the Fourth Proportional to 978.67, 1,342.52 and 925.71

Step by Step Solution

1. Step 1: Write the proportion equation
   978.67 : 1,342.52 = 925.71 : x
2. Step 2: Convert to fraction form
   978.67/1,342.52 = 925.71/x
3. Step 3: Cross multiply
   978.67x = 1,342.52 × 925.71
4. Step 4: Simplify right side
   978.67x = 1,242,786.50
5. Step 5: Solve for x
   x = 1,242,786.50/978.67
6. Step 6: Final answer
   x = 1,269.87