Finding the Fourth Proportional to 2,140,116.72, 3,210,287.94 and 542,693.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,116.72 : 3,210,287.94 = 542,693.61 : x
2. Step 2: Convert to fraction form
   2,140,116.72/3,210,287.94 = 542,693.61/x
3. Step 3: Cross multiply
   2,140,116.72x = 3,210,287.94 × 542,693.61
4. Step 4: Simplify right side
   2,140,116.72x = 1,742,202,751,298.06
5. Step 5: Solve for x
   x = 1,742,202,751,298.06/2,140,116.72
6. Step 6: Final answer
   x = 814,069.03