Finding the Fourth Proportional to 1,562.77, 2,156.37 and 933.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.77 : 2,156.37 = 933.31 : x
2. Step 2: Convert to fraction form
   1,562.77/2,156.37 = 933.31/x
3. Step 3: Cross multiply
   1,562.77x = 2,156.37 × 933.31
4. Step 4: Simplify right side
   1,562.77x = 2,012,561.68
5. Step 5: Solve for x
   x = 2,012,561.68/1,562.77
6. Step 6: Final answer
   x = 1,287.82