Finding the Fourth Proportional to 1,378.01, 1,902.27 and 881.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378.01 : 1,902.27 = 881.32 : x
2. Step 2: Convert to fraction form
   1,378.01/1,902.27 = 881.32/x
3. Step 3: Cross multiply
   1,378.01x = 1,902.27 × 881.32
4. Step 4: Simplify right side
   1,378.01x = 1,676,507.15
5. Step 5: Solve for x
   x = 1,676,507.15/1,378.01
6. Step 6: Final answer
   x = 1,216.62