Finding the Fourth Proportional to 2,075,840.72, 3,113,853.72 and 636,420.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075,840.72 : 3,113,853.72 = 636,420.56 : x
2. Step 2: Convert to fraction form
   2,075,840.72/3,113,853.72 = 636,420.56/x
3. Step 3: Cross multiply
   2,075,840.72x = 3,113,853.72 × 636,420.56
4. Step 4: Simplify right side
   2,075,840.72x = 1,981,720,528,240.48
5. Step 5: Solve for x
   x = 1,981,720,528,240.48/2,075,840.72
6. Step 6: Final answer
   x = 954,659.24