Finding the Fourth Proportional to 1,933.56, 2,881.76 and 1,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,933.56 : 2,881.76 = 1,917.50 : x
2. Step 2: Convert to fraction form
   1,933.56/2,881.76 = 1,917.50/x
3. Step 3: Cross multiply
   1,933.56x = 2,881.76 × 1,917.50
4. Step 4: Simplify right side
   1,933.56x = 5,525,750.80
5. Step 5: Solve for x
   x = 5,525,750.80/1,933.56
6. Step 6: Final answer
   x = 2,857.81