Finding the Fourth Proportional to 709,031.56, 978,466.58 and 386,748.52

Step by Step Solution

1. Step 1: Write the proportion equation
   709,031.56 : 978,466.58 = 386,748.52 : x
2. Step 2: Convert to fraction form
   709,031.56/978,466.58 = 386,748.52/x
3. Step 3: Cross multiply
   709,031.56x = 978,466.58 × 386,748.52
4. Step 4: Simplify right side
   709,031.56x = 378,420,501,684.46
5. Step 5: Solve for x
   x = 378,420,501,684.46/709,031.56
6. Step 6: Final answer
   x = 533,714.61