Finding the Fourth Proportional to 1,538,663.99, 2,123,245.10 and 850,327.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538,663.99 : 2,123,245.10 = 850,327.61 : x
2. Step 2: Convert to fraction form
   1,538,663.99/2,123,245.10 = 850,327.61/x
3. Step 3: Cross multiply
   1,538,663.99x = 2,123,245.10 × 850,327.61
4. Step 4: Simplify right side
   1,538,663.99x = 1,805,453,922,836.80
5. Step 5: Solve for x
   x = 1,805,453,922,836.80/1,538,663.99
6. Step 6: Final answer
   x = 1,173,390.64