Finding the Fourth Proportional to 1,437.33, 1,983.74 and 878.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.33 : 1,983.74 = 878.12 : x
2. Step 2: Convert to fraction form
   1,437.33/1,983.74 = 878.12/x
3. Step 3: Cross multiply
   1,437.33x = 1,983.74 × 878.12
4. Step 4: Simplify right side
   1,437.33x = 1,741,971.00
5. Step 5: Solve for x
   x = 1,741,971.00/1,437.33
6. Step 6: Final answer
   x = 1,211.95