Finding the Fourth Proportional to 1,885.49, 2,601.86 and 1,139.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.49 : 2,601.86 = 1,139.01 : x
2. Step 2: Convert to fraction form
   1,885.49/2,601.86 = 1,139.01/x
3. Step 3: Cross multiply
   1,885.49x = 2,601.86 × 1,139.01
4. Step 4: Simplify right side
   1,885.49x = 2,963,536.63
5. Step 5: Solve for x
   x = 2,963,536.63/1,885.49
6. Step 6: Final answer
   x = 1,571.76