Finding the Fourth Proportional to 1,111,940.37, 1,534,504.31 and 628,507.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111,940.37 : 1,534,504.31 = 628,507.37 : x
2. Step 2: Convert to fraction form
   1,111,940.37/1,534,504.31 = 628,507.37/x
3. Step 3: Cross multiply
   1,111,940.37x = 1,534,504.31 × 628,507.37
4. Step 4: Simplify right side
   1,111,940.37x = 964,447,257,316.71
5. Step 5: Solve for x
   x = 964,447,257,316.71/1,111,940.37
6. Step 6: Final answer
   x = 867,355.20