Finding the Fourth Proportional to 1,123,243.03, 1,549,860.37 and 639,797.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,243.03 : 1,549,860.37 = 639,797.59 : x
2. Step 2: Convert to fraction form
   1,123,243.03/1,549,860.37 = 639,797.59/x
3. Step 3: Cross multiply
   1,123,243.03x = 1,549,860.37 × 639,797.59
4. Step 4: Simplify right side
   1,123,243.03x = 991,596,929,562.51
5. Step 5: Solve for x
   x = 991,596,929,562.51/1,123,243.03
6. Step 6: Final answer
   x = 882,798.20