Finding the Fourth Proportional to 1,105,321.50, 1,525,343.67 and 628,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,321.50 : 1,525,343.67 = 628,393.50 : x
2. Step 2: Convert to fraction form
   1,105,321.50/1,525,343.67 = 628,393.50/x
3. Step 3: Cross multiply
   1,105,321.50x = 1,525,343.67 × 628,393.50
4. Step 4: Simplify right side
   1,105,321.50x = 958,516,047,494.15
5. Step 5: Solve for x
   x = 958,516,047,494.15/1,105,321.50
6. Step 6: Final answer
   x = 867,183.03