Finding the Fourth Proportional to 1,885.82, 2,600.52 and 1,139.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.82 : 2,600.52 = 1,139.64 : x
2. Step 2: Convert to fraction form
   1,885.82/2,600.52 = 1,139.64/x
3. Step 3: Cross multiply
   1,885.82x = 2,600.52 × 1,139.64
4. Step 4: Simplify right side
   1,885.82x = 2,963,656.61
5. Step 5: Solve for x
   x = 2,963,656.61/1,885.82
6. Step 6: Final answer
   x = 1,571.55