Finding the Fourth Proportional to 1,435.90, 1,981.77 and 846.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.90 : 1,981.77 = 846.63 : x
2. Step 2: Convert to fraction form
   1,435.90/1,981.77 = 846.63/x
3. Step 3: Cross multiply
   1,435.90x = 1,981.77 × 846.63
4. Step 4: Simplify right side
   1,435.90x = 1,677,825.94
5. Step 5: Solve for x
   x = 1,677,825.94/1,435.90
6. Step 6: Final answer
   x = 1,168.48