Finding the Fourth Proportional to 686,251.98, 947,065.50 and 380,322

Step by Step Solution

1. Step 1: Write the proportion equation
   686,251.98 : 947,065.50 = 380,322 : x
2. Step 2: Convert to fraction form
   686,251.98/947,065.50 = 380,322/x
3. Step 3: Cross multiply
   686,251.98x = 947,065.50 × 380,322
4. Step 4: Simplify right side
   686,251.98x = 360,189,845,091
5. Step 5: Solve for x
   x = 360,189,845,091/686,251.98
6. Step 6: Final answer
   x = 524,865.29