Finding the Fourth Proportional to 1,435.47, 1,980.71 and 845.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.47 : 1,980.71 = 845.92 : x
2. Step 2: Convert to fraction form
   1,435.47/1,980.71 = 845.92/x
3. Step 3: Cross multiply
   1,435.47x = 1,980.71 × 845.92
4. Step 4: Simplify right side
   1,435.47x = 1,675,520.45
5. Step 5: Solve for x
   x = 1,675,520.45/1,435.47
6. Step 6: Final answer
   x = 1,167.23