Finding the Fourth Proportional to 1,670.84, 2,304.99 and 1,081.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.84 : 2,304.99 = 1,081.57 : x
2. Step 2: Convert to fraction form
   1,670.84/2,304.99 = 1,081.57/x
3. Step 3: Cross multiply
   1,670.84x = 2,304.99 × 1,081.57
4. Step 4: Simplify right side
   1,670.84x = 2,492,996.51
5. Step 5: Solve for x
   x = 2,492,996.51/1,670.84
6. Step 6: Final answer
   x = 1,492.06