Finding the Fourth Proportional to 2,155,887.40, 2,975,119.86 and 1,296,946.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,887.40 : 2,975,119.86 = 1,296,946.12 : x
2. Step 2: Convert to fraction form
   2,155,887.40/2,975,119.86 = 1,296,946.12/x
3. Step 3: Cross multiply
   2,155,887.40x = 2,975,119.86 × 1,296,946.12
4. Step 4: Simplify right side
   2,155,887.40x = 3,858,570,158,961.94
5. Step 5: Solve for x
   x = 3,858,570,158,961.94/2,155,887.40
6. Step 6: Final answer
   x = 1,789,782.79