Finding the Fourth Proportional to 1,870.16, 2,805.25 and 893.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.16 : 2,805.25 = 893.30 : x
2. Step 2: Convert to fraction form
   1,870.16/2,805.25 = 893.30/x
3. Step 3: Cross multiply
   1,870.16x = 2,805.25 × 893.30
4. Step 4: Simplify right side
   1,870.16x = 2,505,915.80
5. Step 5: Solve for x
   x = 2,505,915.80/1,870.16
6. Step 6: Final answer
   x = 1,339.95