Finding the Fourth Proportional to 1,086,601.05, 1,631,607.57 and 920,301.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086,601.05 : 1,631,607.57 = 920,301.57 : x
2. Step 2: Convert to fraction form
   1,086,601.05/1,631,607.57 = 920,301.57/x
3. Step 3: Cross multiply
   1,086,601.05x = 1,631,607.57 × 920,301.57
4. Step 4: Simplify right side
   1,086,601.05x = 1,501,571,008,294.88
5. Step 5: Solve for x
   x = 1,501,571,008,294.88/1,086,601.05
6. Step 6: Final answer
   x = 1,381,897.26