Finding the Fourth Proportional to 1,917.34, 2,877.86 and 993.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.34 : 2,877.86 = 993.53 : x
2. Step 2: Convert to fraction form
   1,917.34/2,877.86 = 993.53/x
3. Step 3: Cross multiply
   1,917.34x = 2,877.86 × 993.53
4. Step 4: Simplify right side
   1,917.34x = 2,859,249.92
5. Step 5: Solve for x
   x = 2,859,249.92/1,917.34
6. Step 6: Final answer
   x = 1,491.26