Finding the Fourth Proportional to 780,698.72, 1,077,314.18 and 436,563

Step by Step Solution

1. Step 1: Write the proportion equation
   780,698.72 : 1,077,314.18 = 436,563 : x
2. Step 2: Convert to fraction form
   780,698.72/1,077,314.18 = 436,563/x
3. Step 3: Cross multiply
   780,698.72x = 1,077,314.18 × 436,563
4. Step 4: Simplify right side
   780,698.72x = 470,315,510,363.34
5. Step 5: Solve for x
   x = 470,315,510,363.34/780,698.72
6. Step 6: Final answer
   x = 602,428.95