Finding the Fourth Proportional to 2,780.01, 4,170.15 and 1,048.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.01 : 4,170.15 = 1,048.50 : x
2. Step 2: Convert to fraction form
   2,780.01/4,170.15 = 1,048.50/x
3. Step 3: Cross multiply
   2,780.01x = 4,170.15 × 1,048.50
4. Step 4: Simplify right side
   2,780.01x = 4,372,402.28
5. Step 5: Solve for x
   x = 4,372,402.28/2,780.01
6. Step 6: Final answer
   x = 1,572.80