Finding the Fourth Proportional to 1,435.78, 1,981.01 and 876.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.78 : 1,981.01 = 876.19 : x
2. Step 2: Convert to fraction form
   1,435.78/1,981.01 = 876.19/x
3. Step 3: Cross multiply
   1,435.78x = 1,981.01 × 876.19
4. Step 4: Simplify right side
   1,435.78x = 1,735,741.15
5. Step 5: Solve for x
   x = 1,735,741.15/1,435.78
6. Step 6: Final answer
   x = 1,208.92