Finding the Fourth Proportional to 1,384.72, 2,066.21 and 1,376.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.72 : 2,066.21 = 1,376.60 : x
2. Step 2: Convert to fraction form
   1,384.72/2,066.21 = 1,376.60/x
3. Step 3: Cross multiply
   1,384.72x = 2,066.21 × 1,376.60
4. Step 4: Simplify right side
   1,384.72x = 2,844,344.69
5. Step 5: Solve for x
   x = 2,844,344.69/1,384.72
6. Step 6: Final answer
   x = 2,054.09