Finding the Fourth Proportional to 2,140,835.86, 3,210,453.71 and 861,011.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,835.86 : 3,210,453.71 = 861,011.36 : x
2. Step 2: Convert to fraction form
   2,140,835.86/3,210,453.71 = 861,011.36/x
3. Step 3: Cross multiply
   2,140,835.86x = 3,210,453.71 × 861,011.36
4. Step 4: Simplify right side
   2,140,835.86x = 2,764,237,115,064.15
5. Step 5: Solve for x
   x = 2,764,237,115,064.15/2,140,835.86
6. Step 6: Final answer
   x = 1,291,195.26