Finding the Fourth Proportional to 2,142,470.86, 3,213,724.50 and 545,035.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,470.86 : 3,213,724.50 = 545,035.30 : x
2. Step 2: Convert to fraction form
   2,142,470.86/3,213,724.50 = 545,035.30/x
3. Step 3: Cross multiply
   2,142,470.86x = 3,213,724.50 × 545,035.30
4. Step 4: Simplify right side
   2,142,470.86x = 1,751,593,296,974.85
5. Step 5: Solve for x
   x = 1,751,593,296,974.85/2,142,470.86
6. Step 6: Final answer
   x = 817,557.58