Finding the Fourth Proportional to 1,706.32, 2,557.77 and 1,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,706.32 : 2,557.77 = 1,090.72 : x
2. Step 2: Convert to fraction form
   1,706.32/2,557.77 = 1,090.72/x
3. Step 3: Cross multiply
   1,706.32x = 2,557.77 × 1,090.72
4. Step 4: Simplify right side
   1,706.32x = 2,789,810.89
5. Step 5: Solve for x
   x = 2,789,810.89/1,706.32
6. Step 6: Final answer
   x = 1,634.99