Finding the Fourth Proportional to 1,393.30, 1,920.00 and 1,376.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.30 : 1,920.00 = 1,376.06 : x
2. Step 2: Convert to fraction form
   1,393.30/1,920.00 = 1,376.06/x
3. Step 3: Cross multiply
   1,393.30x = 1,920.00 × 1,376.06
4. Step 4: Simplify right side
   1,393.30x = 2,642,030.76
5. Step 5: Solve for x
   x = 2,642,030.76/1,393.30
6. Step 6: Final answer
   x = 1,896.24