Finding the Fourth Proportional to 1,356.95, 2,036.34 and 1,265.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.95 : 2,036.34 = 1,265.83 : x
2. Step 2: Convert to fraction form
   1,356.95/2,036.34 = 1,265.83/x
3. Step 3: Cross multiply
   1,356.95x = 2,036.34 × 1,265.83
4. Step 4: Simplify right side
   1,356.95x = 2,577,655.17
5. Step 5: Solve for x
   x = 2,577,655.17/1,356.95
6. Step 6: Final answer
   x = 1,899.59