Finding the Fourth Proportional to 978,402.24, 1,470,402.72 and 480,116.16

Step by Step Solution

1. Step 1: Write the proportion equation
   978,402.24 : 1,470,402.72 = 480,116.16 : x
2. Step 2: Convert to fraction form
   978,402.24/1,470,402.72 = 480,116.16/x
3. Step 3: Cross multiply
   978,402.24x = 1,470,402.72 × 480,116.16
4. Step 4: Simplify right side
   978,402.24x = 705,964,107,579.96
5. Step 5: Solve for x
   x = 705,964,107,579.96/978,402.24
6. Step 6: Final answer
   x = 721,547.93