Finding the Fourth Proportional to 1,893.12, 2,611.89 and 1,106.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,893.12 : 2,611.89 = 1,106.61 : x
2. Step 2: Convert to fraction form
   1,893.12/2,611.89 = 1,106.61/x
3. Step 3: Cross multiply
   1,893.12x = 2,611.89 × 1,106.61
4. Step 4: Simplify right side
   1,893.12x = 2,890,343.59
5. Step 5: Solve for x
   x = 2,890,343.59/1,893.12
6. Step 6: Final answer
   x = 1,526.76