Finding the Fourth Proportional to 1,586,538.63, 2,189,410.83 and 861,371.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,586,538.63 : 2,189,410.83 = 861,371.82 : x
2. Step 2: Convert to fraction form
   1,586,538.63/2,189,410.83 = 861,371.82/x
3. Step 3: Cross multiply
   1,586,538.63x = 2,189,410.83 × 861,371.82
4. Step 4: Simplify right side
   1,586,538.63x = 1,885,896,791,364.81
5. Step 5: Solve for x
   x = 1,885,896,791,364.81/1,586,538.63
6. Step 6: Final answer
   x = 1,188,686.34