Finding the Fourth Proportional to 1,385.22, 2,077.82 and 801.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.22 : 2,077.82 = 801.10 : x
2. Step 2: Convert to fraction form
   1,385.22/2,077.82 = 801.10/x
3. Step 3: Cross multiply
   1,385.22x = 2,077.82 × 801.10
4. Step 4: Simplify right side
   1,385.22x = 1,664,541.60
5. Step 5: Solve for x
   x = 1,664,541.60/1,385.22
6. Step 6: Final answer
   x = 1,201.64