Finding the Fourth Proportional to 2,071.54, 2,858.95 and 1,187.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.54 : 2,858.95 = 1,187.63 : x
2. Step 2: Convert to fraction form
   2,071.54/2,858.95 = 1,187.63/x
3. Step 3: Cross multiply
   2,071.54x = 2,858.95 × 1,187.63
4. Step 4: Simplify right side
   2,071.54x = 3,395,366.02
5. Step 5: Solve for x
   x = 3,395,366.02/2,071.54
6. Step 6: Final answer
   x = 1,639.05