Finding the Fourth Proportional to 1,435.02, 1,980.27 and 845.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.02 : 1,980.27 = 845.58 : x
2. Step 2: Convert to fraction form
   1,435.02/1,980.27 = 845.58/x
3. Step 3: Cross multiply
   1,435.02x = 1,980.27 × 845.58
4. Step 4: Simplify right side
   1,435.02x = 1,674,476.71
5. Step 5: Solve for x
   x = 1,674,476.71/1,435.02
6. Step 6: Final answer
   x = 1,166.87