Finding the Fourth Proportional to 1,932.60, 2,896.56 and 891.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,932.60 : 2,896.56 = 891.18 : x
2. Step 2: Convert to fraction form
   1,932.60/2,896.56 = 891.18/x
3. Step 3: Cross multiply
   1,932.60x = 2,896.56 × 891.18
4. Step 4: Simplify right side
   1,932.60x = 2,581,356.34
5. Step 5: Solve for x
   x = 2,581,356.34/1,932.60
6. Step 6: Final answer
   x = 1,335.69