Finding the Fourth Proportional to 1,890.88, 2,607.18 and 1,333.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.88 : 2,607.18 = 1,333.20 : x
2. Step 2: Convert to fraction form
   1,890.88/2,607.18 = 1,333.20/x
3. Step 3: Cross multiply
   1,890.88x = 2,607.18 × 1,333.20
4. Step 4: Simplify right side
   1,890.88x = 3,475,892.38
5. Step 5: Solve for x
   x = 3,475,892.38/1,890.88
6. Step 6: Final answer
   x = 1,838.24