Finding the Fourth Proportional to 2,166,361.16, 2,989,746.72 and 1,199,581.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,361.16 : 2,989,746.72 = 1,199,581.40 : x
2. Step 2: Convert to fraction form
   2,166,361.16/2,989,746.72 = 1,199,581.40/x
3. Step 3: Cross multiply
   2,166,361.16x = 2,989,746.72 × 1,199,581.40
4. Step 4: Simplify right side
   2,166,361.16x = 3,586,444,556,023.01
5. Step 5: Solve for x
   x = 3,586,444,556,023.01/2,166,361.16
6. Step 6: Final answer
   x = 1,655,515.54