Finding the Fourth Proportional to 1,583,456.43, 2,185,111.32 and 858,288.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,583,456.43 : 2,185,111.32 = 858,288.57 : x
2. Step 2: Convert to fraction form
   1,583,456.43/2,185,111.32 = 858,288.57/x
3. Step 3: Cross multiply
   1,583,456.43x = 2,185,111.32 × 858,288.57
4. Step 4: Simplify right side
   1,583,456.43x = 1,875,456,075,596.39
5. Step 5: Solve for x
   x = 1,875,456,075,596.39/1,583,456.43
6. Step 6: Final answer
   x = 1,184,406.50