Finding the Fourth Proportional to 2,166,279.57, 2,989,559.25 and 1,199,409.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,279.57 : 2,989,559.25 = 1,199,409.89 : x
2. Step 2: Convert to fraction form
   2,166,279.57/2,989,559.25 = 1,199,409.89/x
3. Step 3: Cross multiply
   2,166,279.57x = 2,989,559.25 × 1,199,409.89
4. Step 4: Simplify right side
   2,166,279.57x = 3,585,706,916,243.19
5. Step 5: Solve for x
   x = 3,585,706,916,243.19/2,166,279.57
6. Step 6: Final answer
   x = 1,655,237.38