Finding the Fourth Proportional to 2,166,367.91, 2,989,756.04 and 1,199,588.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,367.91 : 2,989,756.04 = 1,199,588.15 : x
2. Step 2: Convert to fraction form
   2,166,367.91/2,989,756.04 = 1,199,588.15/x
3. Step 3: Cross multiply
   2,166,367.91x = 2,989,756.04 × 1,199,588.15
4. Step 4: Simplify right side
   2,166,367.91x = 3,586,475,916,974.93
5. Step 5: Solve for x
   x = 3,586,475,916,974.93/2,166,367.91
6. Step 6: Final answer
   x = 1,655,524.85