Finding the Fourth Proportional to 1,510.76, 2,085.59 and 1,013.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.76 : 2,085.59 = 1,013.22 : x
2. Step 2: Convert to fraction form
   1,510.76/2,085.59 = 1,013.22/x
3. Step 3: Cross multiply
   1,510.76x = 2,085.59 × 1,013.22
4. Step 4: Simplify right side
   1,510.76x = 2,113,156.43
5. Step 5: Solve for x
   x = 2,113,156.43/1,510.76
6. Step 6: Final answer
   x = 1,398.74