Finding the Fourth Proportional to 1,491.89, 2,236.37 and 875.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.89 : 2,236.37 = 875.48 : x
2. Step 2: Convert to fraction form
   1,491.89/2,236.37 = 875.48/x
3. Step 3: Cross multiply
   1,491.89x = 2,236.37 × 875.48
4. Step 4: Simplify right side
   1,491.89x = 1,957,881.65
5. Step 5: Solve for x
   x = 1,957,881.65/1,491.89
6. Step 6: Final answer
   x = 1,312.35