Finding the Fourth Proportional to 1,580.88, 2,369.50 and 887.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.88 : 2,369.50 = 887.86 : x
2. Step 2: Convert to fraction form
   1,580.88/2,369.50 = 887.86/x
3. Step 3: Cross multiply
   1,580.88x = 2,369.50 × 887.86
4. Step 4: Simplify right side
   1,580.88x = 2,103,784.27
5. Step 5: Solve for x
   x = 2,103,784.27/1,580.88
6. Step 6: Final answer
   x = 1,330.77