Finding the Fourth Proportional to 711,130.82, 1,066,697.25 and 290,406.69

Step by Step Solution

1. Step 1: Write the proportion equation
   711,130.82 : 1,066,697.25 = 290,406.69 : x
2. Step 2: Convert to fraction form
   711,130.82/1,066,697.25 = 290,406.69/x
3. Step 3: Cross multiply
   711,130.82x = 1,066,697.25 × 290,406.69
4. Step 4: Simplify right side
   711,130.82x = 309,776,017,604.60
5. Step 5: Solve for x
   x = 309,776,017,604.60/711,130.82
6. Step 6: Final answer
   x = 435,610.45