Finding the Fourth Proportional to 1,536,570.32, 2,120,667.68 and 857,647.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,536,570.32 : 2,120,667.68 = 857,647.76 : x
2. Step 2: Convert to fraction form
   1,536,570.32/2,120,667.68 = 857,647.76/x
3. Step 3: Cross multiply
   1,536,570.32x = 2,120,667.68 × 857,647.76
4. Step 4: Simplify right side
   1,536,570.32x = 1,818,785,885,456.40
5. Step 5: Solve for x
   x = 1,818,785,885,456.40/1,536,570.32
6. Step 6: Final answer
   x = 1,183,665.90