Finding the Fourth Proportional to 1,105,913.60, 1,658,988.12 and 307,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,913.60 : 1,658,988.12 = 307,196.72 : x
2. Step 2: Convert to fraction form
   1,105,913.60/1,658,988.12 = 307,196.72/x
3. Step 3: Cross multiply
   1,105,913.60x = 1,658,988.12 × 307,196.72
4. Step 4: Simplify right side
   1,105,913.60x = 509,635,708,982.97
5. Step 5: Solve for x
   x = 509,635,708,982.97/1,105,913.60
6. Step 6: Final answer
   x = 460,827.78