Finding the Fourth Proportional to 1,510.37, 2,085.89 and 1,039.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.37 : 2,085.89 = 1,039.48 : x
2. Step 2: Convert to fraction form
   1,510.37/2,085.89 = 1,039.48/x
3. Step 3: Cross multiply
   1,510.37x = 2,085.89 × 1,039.48
4. Step 4: Simplify right side
   1,510.37x = 2,168,236.37
5. Step 5: Solve for x
   x = 2,168,236.37/1,510.37
6. Step 6: Final answer
   x = 1,435.57