Finding the Fourth Proportional to 707,071.52, 975,748.56 and 389,119.52

Step by Step Solution

1. Step 1: Write the proportion equation
   707,071.52 : 975,748.56 = 389,119.52 : x
2. Step 2: Convert to fraction form
   707,071.52/975,748.56 = 389,119.52/x
3. Step 3: Cross multiply
   707,071.52x = 975,748.56 × 389,119.52
4. Step 4: Simplify right side
   707,071.52x = 379,682,811,307.89
5. Step 5: Solve for x
   x = 379,682,811,307.89/707,071.52
6. Step 6: Final answer
   x = 536,979.36