Finding the Fourth Proportional to 947,111.48, 1,421,227.72 and 348,493.01

Step by Step Solution

1. Step 1: Write the proportion equation
   947,111.48 : 1,421,227.72 = 348,493.01 : x
2. Step 2: Convert to fraction form
   947,111.48/1,421,227.72 = 348,493.01/x
3. Step 3: Cross multiply
   947,111.48x = 1,421,227.72 × 348,493.01
4. Step 4: Simplify right side
   947,111.48x = 495,287,926,038.24
5. Step 5: Solve for x
   x = 495,287,926,038.24/947,111.48
6. Step 6: Final answer
   x = 522,945.75