Finding the Fourth Proportional to 1,933.91, 2,666.78 and 1,147.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,933.91 : 2,666.78 = 1,147.81 : x
2. Step 2: Convert to fraction form
   1,933.91/2,666.78 = 1,147.81/x
3. Step 3: Cross multiply
   1,933.91x = 2,666.78 × 1,147.81
4. Step 4: Simplify right side
   1,933.91x = 3,060,950.08
5. Step 5: Solve for x
   x = 3,060,950.08/1,933.91
6. Step 6: Final answer
   x = 1,582.78