Finding the Fourth Proportional to 780,296.91, 1,171,109.69 and 307,314.42

Step by Step Solution

1. Step 1: Write the proportion equation
   780,296.91 : 1,171,109.69 = 307,314.42 : x
2. Step 2: Convert to fraction form
   780,296.91/1,171,109.69 = 307,314.42/x
3. Step 3: Cross multiply
   780,296.91x = 1,171,109.69 × 307,314.42
4. Step 4: Simplify right side
   780,296.91x = 359,898,898,679.06
5. Step 5: Solve for x
   x = 359,898,898,679.06/780,296.91
6. Step 6: Final answer
   x = 461,233.27