Finding the Fourth Proportional to 2,364.71, 3,547.76 and 978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,364.71 : 3,547.76 = 978.12 : x
2. Step 2: Convert to fraction form
   2,364.71/3,547.76 = 978.12/x
3. Step 3: Cross multiply
   2,364.71x = 3,547.76 × 978.12
4. Step 4: Simplify right side
   2,364.71x = 3,470,130.12
5. Step 5: Solve for x
   x = 3,470,130.12/2,364.71
6. Step 6: Final answer
   x = 1,467.47