Finding the Fourth Proportional to 723,880.80, 998,946.72 and 401,582.88

Step by Step Solution

1. Step 1: Write the proportion equation
   723,880.80 : 998,946.72 = 401,582.88 : x
2. Step 2: Convert to fraction form
   723,880.80/998,946.72 = 401,582.88/x
3. Step 3: Cross multiply
   723,880.80x = 998,946.72 × 401,582.88
4. Step 4: Simplify right side
   723,880.80x = 401,159,900,784.15
5. Step 5: Solve for x
   x = 401,159,900,784.15/723,880.80
6. Step 6: Final answer
   x = 554,179.50