Finding the Fourth Proportional to 1,375.74, 2,061.29 and 887.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.74 : 2,061.29 = 887.76 : x
2. Step 2: Convert to fraction form
   1,375.74/2,061.29 = 887.76/x
3. Step 3: Cross multiply
   1,375.74x = 2,061.29 × 887.76
4. Step 4: Simplify right side
   1,375.74x = 1,829,933.03
5. Step 5: Solve for x
   x = 1,829,933.03/1,375.74
6. Step 6: Final answer
   x = 1,330.14