Finding the Fourth Proportional to 784,276.76, 1,175,469.16 and 404,990.72

Step by Step Solution

1. Step 1: Write the proportion equation
   784,276.76 : 1,175,469.16 = 404,990.72 : x
2. Step 2: Convert to fraction form
   784,276.76/1,175,469.16 = 404,990.72/x
3. Step 3: Cross multiply
   784,276.76x = 1,175,469.16 × 404,990.72
4. Step 4: Simplify right side
   784,276.76x = 476,054,101,446.20
5. Step 5: Solve for x
   x = 476,054,101,446.20/784,276.76
6. Step 6: Final answer
   x = 606,997.59