Finding the Fourth Proportional to 1,435.03, 1,980.27 and 845.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.03 : 1,980.27 = 845.60 : x
2. Step 2: Convert to fraction form
   1,435.03/1,980.27 = 845.60/x
3. Step 3: Cross multiply
   1,435.03x = 1,980.27 × 845.60
4. Step 4: Simplify right side
   1,435.03x = 1,674,506.41
5. Step 5: Solve for x
   x = 1,674,506.41/1,435.03
6. Step 6: Final answer
   x = 1,166.88