Finding the Fourth Proportional to 1,870.33, 2,806.06 and 883.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.33 : 2,806.06 = 883.90 : x
2. Step 2: Convert to fraction form
   1,870.33/2,806.06 = 883.90/x
3. Step 3: Cross multiply
   1,870.33x = 2,806.06 × 883.90
4. Step 4: Simplify right side
   1,870.33x = 2,480,279.17
5. Step 5: Solve for x
   x = 2,480,279.17/1,870.33
6. Step 6: Final answer
   x = 1,326.12