Finding the Fourth Proportional to 1,155,322.02, 1,594,221.72 and 638,993.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,322.02 : 1,594,221.72 = 638,993.90 : x
2. Step 2: Convert to fraction form
   1,155,322.02/1,594,221.72 = 638,993.90/x
3. Step 3: Cross multiply
   1,155,322.02x = 1,594,221.72 × 638,993.90
4. Step 4: Simplify right side
   1,155,322.02x = 1,018,697,946,356.40
5. Step 5: Solve for x
   x = 1,018,697,946,356.40/1,155,322.02
6. Step 6: Final answer
   x = 881,743.73