Finding the Fourth Proportional to 2,166,145.89, 2,989,596.14 and 1,248,196.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,145.89 : 2,989,596.14 = 1,248,196.38 : x
2. Step 2: Convert to fraction form
   2,166,145.89/2,989,596.14 = 1,248,196.38/x
3. Step 3: Cross multiply
   2,166,145.89x = 2,989,596.14 × 1,248,196.38
4. Step 4: Simplify right side
   2,166,145.89x = 3,731,603,073,368.99
5. Step 5: Solve for x
   x = 3,731,603,073,368.99/2,166,145.89
6. Step 6: Final answer
   x = 1,722,692.41