Finding the Fourth Proportional to 1,683.40, 2,528.74 and 1,376.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.40 : 2,528.74 = 1,376.00 : x
2. Step 2: Convert to fraction form
   1,683.40/2,528.74 = 1,376.00/x
3. Step 3: Cross multiply
   1,683.40x = 2,528.74 × 1,376.00
4. Step 4: Simplify right side
   1,683.40x = 3,479,562.89
5. Step 5: Solve for x
   x = 3,479,562.89/1,683.40
6. Step 6: Final answer
   x = 2,066.99