Finding the Fourth Proportional to 711,506, 982,111.56 and 510,885.20

Step by Step Solution

1. Step 1: Write the proportion equation
   711,506 : 982,111.56 = 510,885.20 : x
2. Step 2: Convert to fraction form
   711,506/982,111.56 = 510,885.20/x
3. Step 3: Cross multiply
   711,506x = 982,111.56 × 510,885.20
4. Step 4: Simplify right side
   711,506x = 501,746,260,752.91
5. Step 5: Solve for x
   x = 501,746,260,752.91/711,506
6. Step 6: Final answer
   x = 705,189.08