Finding the Fourth Proportional to 1,338,821.55, 1,847,111.88 and 855,669.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,821.55 : 1,847,111.88 = 855,669.51 : x
2. Step 2: Convert to fraction form
   1,338,821.55/1,847,111.88 = 855,669.51/x
3. Step 3: Cross multiply
   1,338,821.55x = 1,847,111.88 × 855,669.51
4. Step 4: Simplify right side
   1,338,821.55x = 1,580,517,317,274.78
5. Step 5: Solve for x
   x = 1,580,517,317,274.78/1,338,821.55
6. Step 6: Final answer
   x = 1,180,528.74