Finding the Fourth Proportional to 1,677.51, 2,316.06 and 1,089.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.51 : 2,316.06 = 1,089.72 : x
2. Step 2: Convert to fraction form
   1,677.51/2,316.06 = 1,089.72/x
3. Step 3: Cross multiply
   1,677.51x = 2,316.06 × 1,089.72
4. Step 4: Simplify right side
   1,677.51x = 2,523,856.90
5. Step 5: Solve for x
   x = 2,523,856.90/1,677.51
6. Step 6: Final answer
   x = 1,504.53