Finding the Fourth Proportional to 2,335.59, 3,503.28 and 874.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.59 : 3,503.28 = 874.77 : x
2. Step 2: Convert to fraction form
   2,335.59/3,503.28 = 874.77/x
3. Step 3: Cross multiply
   2,335.59x = 3,503.28 × 874.77
4. Step 4: Simplify right side
   2,335.59x = 3,064,564.25
5. Step 5: Solve for x
   x = 3,064,564.25/2,335.59
6. Step 6: Final answer
   x = 1,312.12