Finding the Fourth Proportional to 2,114,005.16, 3,171,492.12 and 916,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114,005.16 : 3,171,492.12 = 916,128.56 : x
2. Step 2: Convert to fraction form
   2,114,005.16/3,171,492.12 = 916,128.56/x
3. Step 3: Cross multiply
   2,114,005.16x = 3,171,492.12 × 916,128.56
4. Step 4: Simplify right side
   2,114,005.16x = 2,905,494,508,946.95
5. Step 5: Solve for x
   x = 2,905,494,508,946.95/2,114,005.16
6. Step 6: Final answer
   x = 1,374,402.75