Finding the Fourth Proportional to 2,526.84, 3,486.78 and 1,478.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.84 : 3,486.78 = 1,478.70 : x
2. Step 2: Convert to fraction form
   2,526.84/3,486.78 = 1,478.70/x
3. Step 3: Cross multiply
   2,526.84x = 3,486.78 × 1,478.70
4. Step 4: Simplify right side
   2,526.84x = 5,155,901.59
5. Step 5: Solve for x
   x = 5,155,901.59/2,526.84
6. Step 6: Final answer
   x = 2,040.45