Finding the Fourth Proportional to 1,620,841.06, 2,430,498.48 and 947,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620,841.06 : 2,430,498.48 = 947,116.72 : x
2. Step 2: Convert to fraction form
   1,620,841.06/2,430,498.48 = 947,116.72/x
3. Step 3: Cross multiply
   1,620,841.06x = 2,430,498.48 × 947,116.72
4. Step 4: Simplify right side
   1,620,841.06x = 2,301,965,748,342.59
5. Step 5: Solve for x
   x = 2,301,965,748,342.59/1,620,841.06
6. Step 6: Final answer
   x = 1,420,229.17