Finding the Fourth Proportional to 1,581.06, 2,186.52 and 1,384.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.06 : 2,186.52 = 1,384.22 : x
2. Step 2: Convert to fraction form
   1,581.06/2,186.52 = 1,384.22/x
3. Step 3: Cross multiply
   1,581.06x = 2,186.52 × 1,384.22
4. Step 4: Simplify right side
   1,581.06x = 3,026,624.71
5. Step 5: Solve for x
   x = 3,026,624.71/1,581.06
6. Step 6: Final answer
   x = 1,914.30