Finding the Fourth Proportional to 1,417.94, 2,131.52 and 873.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.94 : 2,131.52 = 873.57 : x
2. Step 2: Convert to fraction form
   1,417.94/2,131.52 = 873.57/x
3. Step 3: Cross multiply
   1,417.94x = 2,131.52 × 873.57
4. Step 4: Simplify right side
   1,417.94x = 1,862,027.56
5. Step 5: Solve for x
   x = 1,862,027.56/1,417.94
6. Step 6: Final answer
   x = 1,313.20