Finding the Fourth Proportional to 1,433,155.52, 1,977,528.81 and 821,190.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,155.52 : 1,977,528.81 = 821,190.55 : x
2. Step 2: Convert to fraction form
   1,433,155.52/1,977,528.81 = 821,190.55/x
3. Step 3: Cross multiply
   1,433,155.52x = 1,977,528.81 × 821,190.55
4. Step 4: Simplify right side
   1,433,155.52x = 1,623,927,957,131.15
5. Step 5: Solve for x
   x = 1,623,927,957,131.15/1,433,155.52
6. Step 6: Final answer
   x = 1,133,113.56