Finding the Fourth Proportional to 2,101,730.40, 2,900,459.52 and 1,243,026.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101,730.40 : 2,900,459.52 = 1,243,026.72 : x
2. Step 2: Convert to fraction form
   2,101,730.40/2,900,459.52 = 1,243,026.72/x
3. Step 3: Cross multiply
   2,101,730.40x = 2,900,459.52 × 1,243,026.72
4. Step 4: Simplify right side
   2,101,730.40x = 3,605,348,683,638.37
5. Step 5: Solve for x
   x = 3,605,348,683,638.37/2,101,730.40
6. Step 6: Final answer
   x = 1,715,419.20