Finding the Fourth Proportional to 1,356.33, 1,870.99 and 883.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.33 : 1,870.99 = 883.63 : x
2. Step 2: Convert to fraction form
   1,356.33/1,870.99 = 883.63/x
3. Step 3: Cross multiply
   1,356.33x = 1,870.99 × 883.63
4. Step 4: Simplify right side
   1,356.33x = 1,653,262.89
5. Step 5: Solve for x
   x = 1,653,262.89/1,356.33
6. Step 6: Final answer
   x = 1,218.92