Finding the Fourth Proportional to 1,978.63, 2,956.63 and 1,507.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.63 : 2,956.63 = 1,507.51 : x
2. Step 2: Convert to fraction form
   1,978.63/2,956.63 = 1,507.51/x
3. Step 3: Cross multiply
   1,978.63x = 2,956.63 × 1,507.51
4. Step 4: Simplify right side
   1,978.63x = 4,457,147.81
5. Step 5: Solve for x
   x = 4,457,147.81/1,978.63
6. Step 6: Final answer
   x = 2,252.65