Finding the Fourth Proportional to 1,669.42, 2,503.72 and 888.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.42 : 2,503.72 = 888.71 : x
2. Step 2: Convert to fraction form
   1,669.42/2,503.72 = 888.71/x
3. Step 3: Cross multiply
   1,669.42x = 2,503.72 × 888.71
4. Step 4: Simplify right side
   1,669.42x = 2,225,076.56
5. Step 5: Solve for x
   x = 2,225,076.56/1,669.42
6. Step 6: Final answer
   x = 1,332.85