Finding the Fourth Proportional to 684,359.82, 944,422.72 and 378,456.95

Step by Step Solution

1. Step 1: Write the proportion equation
   684,359.82 : 944,422.72 = 378,456.95 : x
2. Step 2: Convert to fraction form
   684,359.82/944,422.72 = 378,456.95/x
3. Step 3: Cross multiply
   684,359.82x = 944,422.72 × 378,456.95
4. Step 4: Simplify right side
   684,359.82x = 357,423,343,536.82
5. Step 5: Solve for x
   x = 357,423,343,536.82/684,359.82
6. Step 6: Final answer
   x = 522,274.00