Finding the Fourth Proportional to 1,814.10, 2,715.39 and 947.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.10 : 2,715.39 = 947.22 : x
2. Step 2: Convert to fraction form
   1,814.10/2,715.39 = 947.22/x
3. Step 3: Cross multiply
   1,814.10x = 2,715.39 × 947.22
4. Step 4: Simplify right side
   1,814.10x = 2,572,071.72
5. Step 5: Solve for x
   x = 2,572,071.72/1,814.10
6. Step 6: Final answer
   x = 1,417.82