Finding the Fourth Proportional to 1,427,066.31, 1,970,384.88 and 918,654.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,066.31 : 1,970,384.88 = 918,654.42 : x
2. Step 2: Convert to fraction form
   1,427,066.31/1,970,384.88 = 918,654.42/x
3. Step 3: Cross multiply
   1,427,066.31x = 1,970,384.88 × 918,654.42
4. Step 4: Simplify right side
   1,427,066.31x = 1,810,102,779,113.17
5. Step 5: Solve for x
   x = 1,810,102,779,113.17/1,427,066.31
6. Step 6: Final answer
   x = 1,268,408.32