Finding the Fourth Proportional to 1,012.95, 1,398.52 and 826.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.95 : 1,398.52 = 826.88 : x
2. Step 2: Convert to fraction form
   1,012.95/1,398.52 = 826.88/x
3. Step 3: Cross multiply
   1,012.95x = 1,398.52 × 826.88
4. Step 4: Simplify right side
   1,012.95x = 1,156,408.22
5. Step 5: Solve for x
   x = 1,156,408.22/1,012.95
6. Step 6: Final answer
   x = 1,141.62