Finding the Fourth Proportional to 1,376.88, 1,897.61 and 1,003.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.88 : 1,897.61 = 1,003.26 : x
2. Step 2: Convert to fraction form
   1,376.88/1,897.61 = 1,003.26/x
3. Step 3: Cross multiply
   1,376.88x = 1,897.61 × 1,003.26
4. Step 4: Simplify right side
   1,376.88x = 1,903,798.31
5. Step 5: Solve for x
   x = 1,903,798.31/1,376.88
6. Step 6: Final answer
   x = 1,382.69