Finding the Fourth Proportional to 2,157,309.81, 3,235,123.89 and 808,736.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157,309.81 : 3,235,123.89 = 808,736.76 : x
2. Step 2: Convert to fraction form
   2,157,309.81/3,235,123.89 = 808,736.76/x
3. Step 3: Cross multiply
   2,157,309.81x = 3,235,123.89 × 808,736.76
4. Step 4: Simplify right side
   2,157,309.81x = 2,616,363,612,997.20
5. Step 5: Solve for x
   x = 2,616,363,612,997.20/2,157,309.81
6. Step 6: Final answer
   x = 1,212,789.93