Finding the Fourth Proportional to 2,051.40, 2,830.86 and 1,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.40 : 2,830.86 = 1,167.50 : x
2. Step 2: Convert to fraction form
   2,051.40/2,830.86 = 1,167.50/x
3. Step 3: Cross multiply
   2,051.40x = 2,830.86 × 1,167.50
4. Step 4: Simplify right side
   2,051.40x = 3,305,014.90
5. Step 5: Solve for x
   x = 3,305,014.90/2,051.40
6. Step 6: Final answer
   x = 1,611.10