Finding the Fourth Proportional to 1,558.76, 2,340.06 and 1,478.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.76 : 2,340.06 = 1,478.12 : x
2. Step 2: Convert to fraction form
   1,558.76/2,340.06 = 1,478.12/x
3. Step 3: Cross multiply
   1,558.76x = 2,340.06 × 1,478.12
4. Step 4: Simplify right side
   1,558.76x = 3,458,889.49
5. Step 5: Solve for x
   x = 3,458,889.49/1,558.76
6. Step 6: Final answer
   x = 2,219.00