Finding the Fourth Proportional to 711,131.82, 1,066,698.75 and 290,407.69

Step by Step Solution

1. Step 1: Write the proportion equation
   711,131.82 : 1,066,698.75 = 290,407.69 : x
2. Step 2: Convert to fraction form
   711,131.82/1,066,698.75 = 290,407.69/x
3. Step 3: Cross multiply
   711,131.82x = 1,066,698.75 × 290,407.69
4. Step 4: Simplify right side
   711,131.82x = 309,777,519,913.39
5. Step 5: Solve for x
   x = 309,777,519,913.39/711,131.82
6. Step 6: Final answer
   x = 435,611.95