Finding the Fourth Proportional to 2,017.90, 2,784.45 and 1,133.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.90 : 2,784.45 = 1,133.74 : x
2. Step 2: Convert to fraction form
   2,017.90/2,784.45 = 1,133.74/x
3. Step 3: Cross multiply
   2,017.90x = 2,784.45 × 1,133.74
4. Step 4: Simplify right side
   2,017.90x = 3,156,842.34
5. Step 5: Solve for x
   x = 3,156,842.34/2,017.90
6. Step 6: Final answer
   x = 1,564.42