Finding the Fourth Proportional to 1,435.90, 1,981.48 and 846.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.90 : 1,981.48 = 846.47 : x
2. Step 2: Convert to fraction form
   1,435.90/1,981.48 = 846.47/x
3. Step 3: Cross multiply
   1,435.90x = 1,981.48 × 846.47
4. Step 4: Simplify right side
   1,435.90x = 1,677,263.38
5. Step 5: Solve for x
   x = 1,677,263.38/1,435.90
6. Step 6: Final answer
   x = 1,168.09