Finding the Fourth Proportional to 1,870.74, 2,806.00 and 554.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.74 : 2,806.00 = 554.42 : x
2. Step 2: Convert to fraction form
   1,870.74/2,806.00 = 554.42/x
3. Step 3: Cross multiply
   1,870.74x = 2,806.00 × 554.42
4. Step 4: Simplify right side
   1,870.74x = 1,555,708.15
5. Step 5: Solve for x
   x = 1,555,708.15/1,870.74
6. Step 6: Final answer
   x = 831.60